Promoting the health of marginalized populations in Ecuador through international collaboration and educational innovations
Margot W Parkes a, Jerry Spiegel b, Jaime Breilh c, Fabio Cabarcas b, Robert Huish d & Annalee Yassi b
a. Department of Family Practice, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada.
b. School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada.
c. Health Area, Universidad Andina Simón Bolívar, Quito, Ecuador.
d. Centre de Recherche en Éthique, Université de Montréal, Montreal, QC, Canada.
Correspondence to Margot W Parkes (e-mail: email@example.com).
(Submitted: 27 June 2007 – Revised version received: 18 July 2008 – Accepted: 21 August 2008 – Published online: 10 February 2009.)
Bulletin of the World Health Organization 2009;87:312-319. doi: 10.2471/BLT.07.045393
Much attention has been paid to the pronounced shortage of health workers in low- and middle-income countries (LMICs).1–3 In addition, greater recognition of interrelated determinants of health suggests that personnel with new skills must be added to the mix of human resources mobilized to improve health. Nevertheless, there is little evidence that training programmes for LMIC health personnel are meeting this challenge. Furthermore, the way that international assistance is provided to assist education of health workers may be contributing as much to the problem as providing solutions.
To examine this concern, we studied two post-secondary educational initiatives for the Ecuadorian health workforce: a Canadian-funded Masters Programme in Ecosystem Approaches to Health (MEAH) that focuses on building capacity to sustainably manage environmental health risks;4 and the training of Ecuadorians at the Latin American School of Medicine in Cuba (ELAM – using the acronym from the Spanish name Escuela Latinoamericana de Medicina).5 We suggest a typology to guide analysis of challenges and gaps. We then consider key elements for learning from such programmes with particular regard to lessons, barriers and opportunities at the local, national and international level.
Training to meet the needs of marginalized populations
In reviewing challenges in building a global public health workforce, Beaglehole & Dal Poz drew attention to the limitations of traditional approaches to public health education, which include narrow disciplinary focus, isolation from field experience, overly medicalized orientations and weak incentives to work in LMIC settings where need is greatest.6 In keeping with the framing of the public health workforce as those who are “primarily involved in protecting and promoting the health of whole or specific populations” [emphasis added],6 we concentrate on the challenge of educating health workers whose mandate is to focus on marginalized communities. In doing so we recognize the inevitable tensions and controversies in describing specific populations as “marginalized”, “disadvantaged” or “vulnerable”, and the dual importance of recognizing the assets and capacity of such communities as well as the structural power differentials and processes of exclusion that drive health inequities from global and local levels.7–11 With these challenges in mind, we suggest a typology for training programmes in LMICs (Table 1) that points to where greater attention is needed to equip graduates with specific capabilities to address: (i) determinants of health to complement skills necessary for delivery of clinical services; and (ii) the needs of marginalized populations that are particularly vulnerable to poor health conditions, status and services and other manifestations of structural inequities.
In the context of our typology, MEAH is explicitly oriented to building skills for addressing health determinants that affect vulnerable communities. On the other hand, ELAM focuses on providing clinical health services to disadvantaged populations, but in a context that is sensitive to health determinants. Examining these two examples in the Ecuadorian context, we argue that a range of training innovations is required to create a public health workforce capable of responding to emerging challenges.
Health inequities experienced by marginalized communities in Ecuador are exacerbated by socioeconomic trends, including growing income inequalities. This is illustrated by an increase in the Gini coefficient (where a score of 0 indicates perfectly equal income distribution and 1 complete inequality) from 0.54 in 1995 to 0.59 in 1999.12 Research in the past decade has also drawn attention to a range of global and local driving forces (such as expansion of the petroleum, mining and agro-industrial sectors) with worrying implications for social and environmental conditions in Ecuador.13–18 Such pressures demand more than service from “health services providers” and call for explicit and critical consideration of health determinants. This includes what Breilh describes as both the destructive and protective interactions of global and singular influences on the health of individuals and communities, as well as the design of community-based interventions to respond to inequitable distribution of hazardous exposures such as toxic pollutants, stress and “modes of life”.19,20 These trends not only reinforce the analysis from the Latin American social medicine movement20–22 but also the relevance of ecosystem approaches to health with an emphasis on transdisciplinarity, multi-stakeholder participation and social equity.23
To respond to these challenges, human resources must be trained for interdisciplinary and intersectoral team work, sensitive to the realities of disadvantaged populations. Yet education of health professionals in Ecuador has paid little attention to these concerns. Rather, a “traditional” health service training, oriented to hospitals and urban health centres, has implicitly encouraged health professionals to seek upward mobility in the private sector, rather than contributing to improving health at the community level in marginalized areas. While relevance of skills such as cooperation, interdisciplinary interaction and community-level participatory health promotion may arise during such experiences as the año rural (a compulsory year of rural, often isolated, practice for graduating Ecuadorian medical students), these tend to be short-term rather than valued as long-term career trajectories.
A new generation of international training programmes
Escuela Latinoamericana de Medicina (ELAM)
While Cuba (11.3 million) and Ecuador (13.7 million) are relatively close in population size, their capacities for training human resources for health are quite different. Between 2004 and 2005, 300 physicians graduated from Ecuador’s five public and three private medical schools, while Cuba’s 22 medical schools produced 3708 national and 1610 foreign graduates. Building on Cuba’s infrastructure for large-scale training, over 8500 foreigners from 29 countries throughout Africa and the Americas (including the United States of America) are presently studying medicine at ELAM and will train alongside Cuban nationals in 14 affiliated medical schools (Table 2). These foreign students (like the Cubans) do not pay for tuition, residence, food, clothes or resources while studying in Cuba. Their only “cost” is a moral commitment to return to their home communities to apply their skills.
The idea for ELAM emerged after the devastation caused by Hurricane Mitch in Central America in 1998. Cuban medical brigades realized that without long-term capacity building, their services would always be required.28 Cuba therefore initiated a programme to train local people from affected regions as doctors – with the understanding that they would eventually return to their home communities to replace Cuban medical brigades. In 1999, the programme expanded beyond the countries affected by Hurricane Mitch to include the majority of countries in the Americas and some in Africa. Taking between 1600 and 2200 students per year, ELAM is unparalleled in generating health workers for developing countries. As of August 2007, close to 5000 physicians, including 542 Ecuadorians, had graduated from ELAM. The school’s curriculum is heavily focused on community-based practice, with graduates trained to return to their home countries to work alongside, or replace, Cuban medical brigades, often in marginalized and underserved communities. As there are currently no Cuban brigades in Ecuador, Ecuadorian graduates return to serve an año rural alongside other Ecuadorian medical graduates.
Masters Programme in Ecosystem Approaches to Health (MEAH)
A complementary approach to promoting health in Ecuador’s disadvantaged populations is MEAH, a Canadian-Ecuadorian-Cuban-Mexican collaboration funded by CIDA (Canadian International Development Agency). Five years of previous Canadian-Cuban collaborative experience in developing and refining training strategies for environmental health29–31 provided the foundation for the 6-year project entitled “Sustainably managing environmental health risks in Ecuador”. Launched in 2005, this project aims to build human resources and institutional capabilities for improving social and ecological determinants of health, particularly in marginalized populations (e.g. rural and indigenous communities); and to demonstrate that associated health impacts can be reduced.
The project seeks to enhance existing Ecuadorian capacity by strengthening links between universities and communities, building an international network involving Latin American centres of excellence in Cuba and Mexico, in addition to Canadian and other Ecuadorian partners, to enhance sustainability. While the programme has a multi-level approach to capacity building, we focus here on the first cohort of 30 students completing the MEAH programme as a “train the trainer” cornerstone of the project. To build competencies for designing, conducting and evaluating community-based environmental health interventions, the programme is explicitly community-oriented, with an interactive problem-based curriculum, community-based fieldwork in each training module, evaluation strategies focused on the values and skills of collaborative learning, and student theses designed and developed with targeted communities. The programme’s modules are team-taught, drawing on Canadian and Ecuadorian professors alongside Cuban and Mexican partners. In addition to traditional environmental health content, modules focus on issues of particular relevance to disadvantaged and vulnerable communities, including heavy metals in mining communities, agro-industry and pesticides, ancestral knowledge, food nutrition and sustainable agriculture, and disaster preparedness.
These two training initiatives offer insights into how international programmes can contribute to crossing disciplinary, professional, sectoral and national barriers to address health determinants and meet the needs of marginalized populations. We have identified specific aspects at local, national and international scales that may influence the impact and sustainability of these programmes.
Attracting and selecting students
There is evidence that Canadian doctors rarely practice in rural or marginalized communities for the long term if they do not come from those communities.31 This applies equally to Ecuador. The acceptance and retention of students from marginalized (e.g. rural, indigenous, immigrant) populations into health professions is typically low and demands increased attention to ensure better representation of these students among those training as health workers.32–34
A notable feature of both programmes is the explicit selection of students who are oriented to the needs of disadvantaged communities. ELAM seeks candidates who would not otherwise have the opportunity to study medicine in their home countries either because of minimal resources or institutional discrimination. Students from marginalized communities are thus given special consideration, reflected by the high representation from rural or under-resourced communities (including more than 100 ethnic groups) in the first graduating class of 49% women.
The demographic profile of the initial cohort of 30 students in the MEAH programme similarly reflects specific criteria. Academic disciplinary aptitudes were weighed alongside capacity for undertaking community-based interventions, knowledge translation and cultural diversity. Four of the initial cohort are indigenous leaders of their local communities or organizations. Sustainability was also factored into selection with five students from each university centre already holding university positions with the promise of continuation after completion of their programme. The intention is that these students lead subsequent iterations of the programme and extend beyond teaching to consider accountability and research ethics inherent in the scholarship of integration, application and engagement.24–26 Progress towards these ends has already been indicated by positive feedback (evaluation of and by the students) through surveys, student reflective journals and activity logs at the end of each module.
A related feature is the explicit intention to build communities of practice35–37 for future work within local communities, building bridges between the provincial, university, community and local government representatives within the student body, as well as with community partners established through the research process. Early outcomes from this approach include workshops initiated as part of community-oriented thesis development – with themes ranging from sustainable drinking-water management for an island community in the south-east of Ecuador to options to commercialize pesticide-free products in the Ecuadorian ranges. By May 2008, eight workshops had been initiated involving 336 community leaders in educational and planning activities.
Orienting to existing national capacities
A point of contrast between the two programmes is the extent to which they address national capacity. For ELAM graduates returning to Ecuador – where no special integration strategy exists – the process of reintegration can be harsh. ELAM graduates join other Ecuadorian medical graduates in the año rural, where they work in poorly resourced clinics. After conducting interviews with 80% of ELAM graduates working in four regions of Ecuador, Huish found that they demonstrated outstanding competency and confidence working in their clinical settings as well as sound knowledge of social and environmental factors contributing to poor health in their communities.38 Limitations in their ability to practice disease prevention and health promotion – the cornerstones of Cuban medical education – largely reflected limited support at the community level.
After the año rural, like most young Ecuadorian doctors, ELAM graduates struggle to find residency spaces. The ELAM graduates are not necessarily in a better position than locally trained counterparts to address the broader infrastructure needs to improve health care for the marginalized. Without a substantial long-term reintegration strategy or a clearly defined career trajectory that effectively uses the skill set and enthusiasm of the ELAM graduates, the potential for expanding health care to marginalized communities is not being fully realized. Many ELAM graduates are returning to Cuba for specialization or to join Cuban-funded health brigades in other countries, where infrastructure and like-minded colleagues are more readily found. Ironically, the dilemma faced by ELAM graduates may not be too different from other graduates returning from study “abroad” to a home country whose health systems do not reflect the orientation of the training country.
In this regard, strategies adopted by the MEAH programme offer potential direction. The community and province-level interactions of the initial cohort of students are being complemented by national-level interactions – with coordinators from each of the three universities building relationships with a national team that includes an academic director and senior tutors with complementary skills in ecosystem approaches to health, community development, agro-ecology and laboratory science as well as strong ties with the Latin American Social Medicine movement.19–22 Since programme inception, the National (Ecuadorian) Steering Committee has consolidated a national network as a platform for future iterations of the Masters programme. This network bodes well for the integration, consolidation and sustainability of efforts, although is arguably more resource-intensive and ambitious than disaggregated programmes at each of the three universities. An indication of the deepening of national capacity is the participation of members of the emerging Ecuadorian team in the research programme of the Canadian community of practice in ecosystem approaches to health. Here Ecuadorians can offer valuable insights to international colleagues seeking to consolidate and refine strategies for teaching and research in ecosystem approaches to health.27 Yet while explicit attention to a supportive and stimulating national network may offer a counter to the pressures of out-migration, programme graduates will not be immune to the factors driving migration of health workers.39–42
Roles and responsibilities
Training programmes must anticipate and respond not only to the complex health determinants in disadvantaged communities but also factors determining the ability of the health workforce to fulfil the potential of training with this orientation. Specific features of the two programmes are summarized by the five categories of health promotion action defined by the Ottawa Charter43 (Table 3). Here we see that these themes are as relevant for the trainees and their training environment as they are to the communities themselves. The interplay between personal, local, national and international scales is also consistent with the opportunities and challenges identified by the Bangkok Charter for Health Promotion in a Globalized World.44 The Bangkok Charter’s call for critical attention to the involvement of civil society, governments and politicians at all levels, the private sector, international organizations and the public health community, highlights the imperative of training health workers capable of engaging with complex, multi-stakeholder and collaborative processes to address the determinants of health.23,45,46 Designers and funders of international training programmes are therefore faced with growing responsibilities – not only to equip students to respond to the protective and destructive factors influencing health in disadvantaged populations but also to anticipate and respond to the complex, conflicting pressures (ranging from out-migration to institutional inertia) that could determine whether graduates are able to fulfil their potential to serve these populations.
Table 3. Specific features of the two programmes categorized by the five categories of health promotion action as defined by the Ottawa Charter43
Both ELAM and MEAH are doing well in preparing health professionals with the necessary skills to work within, and lead, their communities. The selection process, the curriculum and the aim of placement in marginalized communities all bode well for empowering communities to take control of their health determinants. However, little guarantee exists with either programme that graduates will return to or develop long-term sustainable solutions in their communities. In fact, our analysis suggests a need to identify the specific vulnerabilities faced by these graduates and to proactively plan to address the structural and institutional obstacles and opportunities at local and national levels in conjunction with any international training of future health workers. We would be well served to ensure that, both during and after training, health workers are able to cultivate the principles of responsibility, respect, relevance and reciprocity that are critical in responding to health issues in marginalized communities.26 The value of these considerations have not only been reinforced by the experience in Ecuador, but are now being reflected back to inform efforts to build capacity for ecosystem approaches to health in Canada and internationally.27
A starting point for this paper was the concern that the design and provision of international training assistance requires critical attention to meet the specific health needs of marginalized communities in LMICs.6 We have highlighted a new range of responsibilities which we overlook at our peril. Without a firm understanding of how and with whom health workers can reintegrate to impact their communities, graduates of capacity-building programmes, such as the two examined here, may be “lost” to broader social and economic forces. Beyond building capacities of individual trainees, we have also identified the importance of communities of practice, as well as supportive local, national and international networks. International programmes and partnerships thus have an ongoing role in developing such strategies and focusing attention to the multiple levels required to ensure that capacity building of individual trainees is not lost. ■
We thank the Health Disparities Research Unit at UBC (funded by the Michael Smith Foundation for Health Research), the university project coordinators in Ecuador (Ivan Villacres, U de Machala Joscelito Solano, U de Bolivar; Maria Merchan, U de Cuenca), other members of the Ecuadorian Academic Advisory Committee (Arturo Campana, Maria Lourdes de Larrea and Marcello Cevallos) and UBC faculty and staff, (Rosamelia Andrade, Bill Black, Bill Bowie, Bonnie Henry, Eduardo Jovel, Veronica Moreno, Elena Orrego, Laurie Pearce, Alejandro Rojas, Francisco Silva and Marcello Veiga).
Funding: Canadian International Development Agency (University Partnerships in Cooperation and Development Program); Canadian Institutes of Health Research Doctoral Fellowship (Cabarcas); Canadian Institutes of Health Research Global Health Research Initiative Fellowship (Parkes); Michael Smith Foundation for Health Research; Trudeau Foundation Scholarship (Huish).
Competing interests: None declared.
- The world health report 2006: working together for health. Geneva: World Health Organization; 2006.
- Vujicic M, Zurn P, Diallo K, Adams O, Dal Poz M. The role of wages in the migration of health care professionals from developing countries. Hum Resour Health 2004; 2: 3- doi: 10.1186/1478-4491-2-3 pmid: 15115549.
- Chen L, Evans T, Anand S, Boufford JI, Brown H, Chowdhury M, et al., et al. Human resources for health: overcoming the crisis. Lancet 2004; 364: 1984-90 doi: 10.1016/S0140-6736(04)17482-5 pmid: 15567015.
- Spiegel JM, Breilh J, Parkes MW, Bowie W, Pearce L, Yassi A. UBC’s experience in building partnerships for development in Ecuador – 1. From the top down: Establishing sustainable community-focused networks. In: 11th UNESCO-APEID international conference – Reinventing higher education: toward participatory and sustainable development, 12-14 December 2007, Bangkok, Thailand. Available at: http://www.unescobkk.org/fileadmin/user_upload/apeid/Conference/11thConference/papers/5A2_J_Spiegel_et_al.pdf [accessed on 11 March 2009].
- Huish R. Going where no doctor has gone before: The role of Cuba’s Latin American School of Medicine in meeting the needs of some of the world’s most vulnerable populations. Public Health 2008; 122: 552-7 doi: 10.1016/j.puhe.2008.03.001 pmid: 18466937.
- Beaglehole R, Dal Poz MR. Public health workforce: challenges and policy issues. Hum Resour Health 2003; 1: 4- doi: 10.1186/1478-4491-1-4 pmid: 12904251.
- Aday LA. Health status of vulnerable populations. Annu Rev Public Health 1994; 15: 487-509 doi: 10.1146/annurev.pu.15.050194.002415 pmid: 8054096.
- Breilh J. Epidemiology’s role in the creation of a humane world: convergences and divergences among the schools. Soc Sci Med 1995; 41: 911-4 doi: 10.1016/0277-9536(95)00278-F pmid: 8545665.
- Spiegel JM, Labonte R, Ostry A. Understanding “globalization” as a determinant of health determinants: a critical perspective. Int J Occup Environ Health 2004; 10: 360-7 pmid: 15702749.
- Marmot M. Social determinants of health inequalities. Lancet 2005; 365: 1099-103 pmid: 15781105.
- Lynam MJ, Cowley S. Understanding marginalization as a social determinant of health. Crit Public Health 2007; 17: 137-49 doi: 10.1080/09581590601045907.
- Waters WF. Globalization and local response to epidemiological overlap in 21st century Ecuador. Global Health 2006; 2: 8- doi: 10.1186/1744-8603-2-8 pmid: 16712722.
- Country profile: Ecuador. Washington, DC: Pan American Health Organization Available from: http://www.paho.org/english/dd/ais/be_v25n2-perfil-ecuador.htm [accessed 23 January 2009].
- Cole DC, Sherwood S, Crissman C, Barrera V, Espinosa P. Pesticides and health in highland Ecuadorian potato production: assessing impacts and developing responses. Int J Occup Environ Health 2002; 8: 182-90 pmid: 12358074.
- Webb J, Mainville N, Mergler D, Lucotte M, Betancourt O, Davidson R, et al., et al. Mercury in fish-eating communities of the Andean Amazon, Napo River Valley, Ecuador. EcoHealth 2004; 1: 59-71 doi: 10.1007/s10393-004-0063-0.
- San Sebastián M, Armstrong B, Stephens C. Outcomes of pregnancy among women living in the proximity of oil fields in the Amazon Basin of Ecuador. Int J Occup Environ Health 2002; 8: 312-9 pmid: 12412848.
- Betancourt O, Narváez A, Roulet M. Small-scale gold mining in the Puyango River Basin, Southern Ecuador: a study of environmental impacts and human exposures. EcoHealth 2005; 2: 323-32 doi: 10.1007/s10393-005-8462-4.
- Breilh J, Campana A, Hidalgo F, Sánchez D, Larrea ML, Felicita O, et al. Floriculture and the health divide: a struggle for fair and ecological flowers. In: Alternative Latin American Health Report. Quito: Latin American Health Watch; 2005. pp. 66–79.
- Breilh J. Epidemiología Crítica. Buenos Aires: Lugar Editorial; 2003.
- Breilh J. Latin American critical (‘social’) epidemiology: new settings for an old dream. Int J Epidemiol 2008; 37: 745-50 pmid: 18653510.
- Krieger N. Latin American social medicine: the quest for social justice and public health. Am J Public Health 2003; 93: 1989-91 doi: 10.2105/AJPH.93.12.1989 pmid: 14652317.
- Waitzkin H, Iriart C, Estrada A, Lamadrid S. Social medicine in Latin America: productivity and dangers facing the major national groups. Lancet 2001; 358: 315-23 doi: 10.1016/S0140-6736(01)05488-5 pmid: 11498235.
- Forget G, Lebel J. An ecosystem approach to human health. Int J Occup Environ Health 2001; 7: S3-36 pmid: 11387989.
- Brown V. Collective decision-making bridging public health, sustainability governance and environmental management. In: Soskolne C, Westra L, Kotzé LJ, Mackey B, Rees WE and Westra R, eds. Sustaining life on earth: environmental and human health through global governance. Lanham, MD: Lexington Books; 2007.
- Woollard RF. Caring for a common future: medical schools’ social accountability. Med Educ 2006; 40: 301-13 doi: 10.1111/j.1365-2929.2006.02416.x pmid: 16573665.
- Kirkness V, Barnhardt R. First Nations and higher education: The four R’s - respect, relevance, reciprocity, and responsibility. J Am Indian Educ 1991; 30: 9-16.
- A Canadian community of practice in ecosystem approaches to health with an EcoHealth training and awards program [homepage]. Available from: www.copeh-canada.org [accessed on 23 January 2009].
- Huish R, Kirk JM. Cuban Medical Internationalism: the development of the Latin American School of Medicine and human-resource-based healthcare provision. Lat Am Perspect 2007; 34: 77-92 doi: 10.1177/0094582X07308119.
- Spiegel J, Garcia M, Bonet M, Yassi A. Learning together: A Canada-Cuba research collaboration to improve the sustainable management of environmental health risks. Can J Public Health 2006; 97: 50-5 pmid: 16512329.
- Yassi A, Kjellström T, de Kok T, Guidotti T. Basic environmental health. New York, NY: Oxford University Press; 2001.
- Yassi A, Kjellström T, de Kok T, Guidotti T. Salud Ambiental Básica [in Spanish]. Mexico DF: PNUMA/OMS/INHEM; 2002.
- Dhalla IA, Kwong JC, Streiner DL, Baddour RE, Waddell AE, Jonson IL. Characteristics of first-year students in Canadian medical schools. CMAJ 2002; 166: 1029-35 pmid: 12002979.
- Prideaux D, Saunders N, Schofield K, Wing L, Gordon J, Hays R, et al., et al. Country report: Australia. Med Educ 2001; 35: 495-504 doi: 10.1046/j.1365-2923.2001.00947.x pmid: 11328521.
- Schwab RG, Anderson I. Trends in indigenous participation in health sciences education: the vocational education and training sector,1994-97. Canberra: Australian National University; 1999.
- Barab SA, Duffy T. From practice fields to communities of practice [Technical report no. 1-98]. In: Jonassen D, Land S, eds. Theoretical foundations of learning environments. Bloomington, IN: Center for Research on Learning and Technology, Indiana University; 2000.
- Wenger E. Communities of practice and social learning systems. Organization 2000; 7: 225-46 doi: 10.1177/135050840072002.
- Johnson H. Communities of practice and international development. Prog Dev Stud 2007; 7: 277-90 doi: 10.1177/146499340700700401.
- Huish R. Going where no doctor has gone before: the place of Cuba’s Latin American School of Medicine in building health care capacity for Ecuador [PhD thesis]. Burnaby, BC: Department of Geography, Simon Fraser University. 2008.
- Clark PF, Stewart JB, Clark DA. The globalization of the labour market for health-care professionals. Int Labour Rev 2006; 145: 37-64 doi: 10.1111/j.1564-913X.2006.tb00009.x.
- Cooper RA. Physician migration: a challenge for America, a challenge for the world. J Contin Educ Health Prof 2005; 25: 8-14 doi: 10.1002/chp.3 pmid: 16078797.
- Dauphinee WD. Physician migration to and from Canada: the challenge of finding the ethical and political balance between the individual’s right to mobility and recruitment to underserviced communities. J Contin Educ Health Prof 2005; 25: 22-9 doi: 10.1002/chp.5 pmid: 16078799.
- Eckhert NL. The global pipeline: too narrow, too wide or just right? Med Educ 2002; 36: 606-13 doi: 10.1046/j.1365-2923.2002.01257.x pmid: 12109979.
- Ottawa Charter for Health Promotion. Geneva: World Health Organization;1986.
- The Bangkok Charter for Health Promotion in a Globalized World. Health Promot Int 2006; 21: 10-4 doi: 10.1093/heapro/dal046 pmid: 17307952.
- Parkes M, Panelli R, Weinstein P. Converging paradigms for environmental health theory and practice. Environ Health Perspect 2003; 111: 669-75 pmid: 12727592.
- Parkes MW, Bienen L, Breilh J, Hsu L-N, McDonald M, Patz JA, et al., et al. All Hands on Deck: Transdisciplinary Approaches to Emerging Infectious Disease. EcoHealth 2005; 2: 258-72 doi: 10.1007/s10393-005-8387-y.