Disclaimer: the designations employed and the presentation of the material in publications listed in this database does not imply the expression of any opinion whatsoever on the part of WHO concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. Dotted and dashed lines on maps represent approximate border lines for which there may not yet be full agreement.

The mention of specific companies or of certain manufacturers’ products in publications listed in the database does not imply that they are endorsed or recommended by WHO in preference to others of a similar nature that are not mentioned. Errors and omissions excepted, the names of proprietary products are distinguished by initial capital letters.

By listing publications in this database and providing links to external sites does not mean that WHO endorses or recommends those publications or sites, or has verified the content contained within them. The database has been compiled without warranty of any kind, either expressed or implied. The responsibility for the interpretation and use of publications included in this database lies with the reader. In no event shall WHO be liable for damages arising from its use.