The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of UNAIDS or 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. The mention of specific companies or of certain manufacturers' products does not imply that they are endorsed or recommended by UNAIDS or WHO in preference to others of a similar

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... ature that are not mentioned. Errors and omissions excepted, the names of proprietary products are distinguished by initial capital letters. UNAIDS and WHO do not warrant that the information contained in this publication is complete and correct and shall not be liable for any damages incurred as a result of its use.