Acknowledgements
| N | Register | Name | Town | Affiliation (1) | |
| 1 | Argentina | Edoardo Castilla | Rio de Janeiro | Dept. Genetica/FIOCRUZ | |
| 1 | Austria - Styria | Martin Haeusler | Graz | Styrian Malformation Registry, Department of Obstetrics & Gynaecology, Karl-Fransens University | |
| 1 | Belgium - Hainaut | Yves Gillerot | Loverval | Institut de Morphologie Pathologique, Departement Genetique | |
| 1 | Bolivia | Edoardo Castilla | Rio de Janeiro | Dept. Genetica/FIOCRUZ | |
| 1 | Brazil | Edoardo Castilla | Rio de Janeiro | Dept. Genetica/FIOCRUZ | |
| 1 | Canada - Alberta | R. Brian Lowry | Alberta | Department of Medical Genetics - Alberta Chilen's Hospital | |
| 1 | Chile | Edoardo Castilla | Rio de Janeiro | Dept. Genetica/FIOCRUZ | |
| 1 | Colombia | Edoardo Castilla | Rio de Janeiro | Dept. Genetica/FIOCRUZ | |
| 1 | Croatia | Ingeborg Barisic | Zagreb | Chilen’s Hospital Zagreb | |
| 1 | Czech Rep | Antonin Sipek | Prague | Department of Population Teratology, Institute for Care of Mother and Child | |
| 1 | Denmark - Odense | Ester Garne | Odense C | Epidmiology, University of Southern Denmark | |
| 1 | Ecuador | Edoardo Castilla | Rio de Janeiro | Dept. Genetica/FIOCRUZ | |
| 1 | France - Central East | Elisabeth Robert-Gnansia | Lyon | Institute Européen des Génomutations | |
| 1 | France - Paris | Catherine De Vigan | Villejuif Cedex | INSERM | |
| 1 | Germany - Mainz | Annette Queisser-Luft | Mainz | Universitatskinderklinik Mainz | |
| 1 | Germany - Saxony-Anhalt | Volker Steinbicker | Magdeburg | Malformation Monitoring Saxony-Anhalt, Faculty of Medicine | |
| 1 | Hungary | Csaba Siffel/Julia Metneki | Budapest | Department of Human Genetics and Teratology, National Center for Epidemiology | |
| 1 | Ireland - Dublin | Robert Mc Donnell | Dublin | Department of Public Health, Eastern Regional Health Authority | |
| 1 | Israel IBDMS | Paul Merlob | Petah Tikva | Department of Neonatology, Rabin Medical Center | |
| 1 | Italy BCAM | Gioacchino Scarano | Benevento | Registro Campano Difetti Congeniti, Azianda Ospedaliera "G. Rummo" | |
| 1 | Italy IMER | Guido Cocchi | Bologna | Istituto Clinico di Pediatria e Neonatologia, Università di Bologna | |
| 1 | Italy North East | Romano Tenconi | Padova | Clinical and Epidemiological Genetic Service | |
| 1 | Italy Tuscany | Fabrizio Bianchi | Pisa | Sezione di Epidemiologia e Biostatistica, Istituto di Fisiologia Clinica del Consiglio Nazionale delle Ricerche | |
| 1 | Japan JAOG | Yoshio Sumiyoshi | Yokohama | JAOG, Yokohama City University, Urafune Hospital | |
| 1 | Malta | Miriam Gatt | Guardamangia | Malta Congenital Anomalies Registry, Department of Health Information | |
| 1 | Mexico RYVEMCE | Osvaldo Mutchinick | Mexico City | Departamento de Genetica, Instituto Nacional de Nutricion | |
| 1 | Netherlands - Northern Netherlands | Hermien de Walle | Groningen | Department of Medical Genetics | |
| 1 | Paraguay | Edoardo Castilla | Rio de Janeiro | Dept. Genetica/FIOCRUZ | |
| 1 | Poland | Anna Latos-Bielenska | Poznan | Polish Registry of Congenital Malformations | |
| 1 | Portugal - Southern Portugal | Maria Feijoo | Lisbon | Observatorio Nacional de Saude - Instituto Nacional de Saude Ricardo Jorge | |
| 1 | Russia Moscow | Ludmila Joutchenko | Moscow | Moscow Regional Research Institute of Obstetrics and Gynecology | |
| 1 | Slovak Republic | Elena Szabova | Bratislava | Institut of Preventiv and Clinical Medicine | |
| 1 | South Africa SABDSS | David Bourne-Rauf Sayed | Cape Town | School of Public Health and Primary Health Care, University of Cape Town | |
| 1 | Spain - Asturias | Carmen Mosquera-Tenreiro | Oviedo | Servicio de Epidemiologia, Consejeria de Sanidad | |
| 1 | Spain - Basque Countries | Blanca Gener | Vizcaya | RACAV, Hospital de Cruces | |
| 1 | Switzerland - Vaud | Marie-Claude Addor | Lausanne | Registre Vaudois des Malformations, Division Autonome de Genetique Medicale | |
| 1 | UK - North Thames | Ms Lenore Abramsky | Harrow | Congenital Malformations Register, Perinatal Public Health, Northwick Park Hospital | |
| 1 | UK - Oxford | Patricia Boyd | Oxford | Prenatal Diagnosis Unit, Women's Centre | |
| 1 | UK - Wessex | Diana Wellesley | Southampton | Wessex Clinical Genetics Service, Princess Anne Hospital | |
| 1 | Ukraine | . Wladimir Wertelecki | Mobile | Department of Medical Genetics, University of South Alabama | |
| 1 | United Arab Emirates | Lihadh Al Gazali | Al Ain | Department of Pediatrics, Faculty of Medicine | |
| 1 | Uruguay | Edoardo Castilla | Rio de Janeiro | Dept. Genetica/FIOCRUZ | |
| 1 | USA - Alabama | . Wladimir Wertelecki | Mobile | Alabama Birth Defects Surveillance and Prevention Program | |
| 1 | USA - Arkansas | Bridget S. Mosley | Little Rock | Arkansas Center for birth Defects, Research and Prevention | |
| 1 | USA - Atlanta | Dave Erickson | Atlanta | Centers for Disease Control and Prevention, National Center on Birth Defects and Developmental Disabilities | |
| 1 | USA - Hawaii | Ruth D. Merz | Honolulu | Hawaii Birth Defects Progam | |
| 1 | USA - Illinois | Trish Egler | Springfield | Illinois Department of Public Health | |
| 1 | USA - Kentucky | Joyce M. Robl | Frankfort | Kentucky Department of Public Health | |
| 1 | USA - Michigan | Glenn Copeland | Lansing | Michigan Dept. Of Community Health | |
| 1 | USA - Oklahoma | Kay A. Pearson | Oklahoma City | Oklahoma Department oh Health | |
| 1 | USA - Rhode Island | Samara Viner-Brown | Providence | Rhode Island Department of Health | |
| 1 | USA - Tennessee | David J. Law | Nashville | TN Dept. Of Health - BHI | |
| 1 | USA - Utah | Marcia Lynn Feldkamp | Salt Lake City | Utah Birth Defects Network | |
| 1 | USA - West Virginia | Kathryn G. Cummons | Charleston | OMCFH | |
| 1 | Venezuela | Edoardo Castilla | Rio de Janeiro | Dept. Genetica/FIOCRUZ | |
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