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Extracts from WHO's website and publications may be reproduced for certain purposes and with certain restrictions, as indicated in the copyright notice.

If you wish to use an extract from the WHO website or from a WHO publication, please check first that the extract (paragraph, table, figure, photograph or other illustration) actually belongs to WHO. If the extract concerned is marked as reproduced from another published source, then please contact the publisher of that source for permission to reproduce it. In such a case, WHO cannot help you.

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