TY - BOOK ED - UNAIDS/WHO Working Group on Global HIV/AIDS/STI Surveillance. ED - World Health Organization. ED - UNAIDS. TI - Guidelines for measuring national HIV prevalence in population-based surveys / SN - 9241593709 CY - Geneva PB - World Health Organization KW - HIV infections KW - epidemiology KW - HIV seroprevalence KW - Population surveillance KW - methods KW - Guidelines UR - http://apps.who.int/iris/ ER -