1. Prevention gap report;Joint United Nations Programme on HIV/AIDS,2016
2. Guidelines on estimating the size of populations most at risk to HIV;Joint United Nations Programme on HIV/AIDS, World Health Organization,2010
3. Working group on global HIV/AIDS surveillance: estimating the size of populations at risk for HIV: issues and methods;Family Health International, Joint United Nations Programme on HIV/AIDS, World Health Organization,2003
4. Theoretical and empirical comparisons of methods to estimate the size of hard-to-reach populations: a systematic review;Wesson;AIDS Behav,2017
5. Meta-analysis of observational studies in epidemiology: a proposal for reporting. Meta-analysis Of Observational Studies in Epidemiology (MOOSE) group;Stroup;J Am Med Assoc,2000