1. UNAIDS. Evidence for eliminating HIV-related stigma and discrimination — Guidance for countries to implement effective programmes to eliminate HIV-related stigma and discrimination in six settings. Published online 2020:84.
2. Approaches to recruiting ‘hard-to-reach’ populations into research: a review of the literature;Shaghaghi;Health Promot Perspect,2011
3. The prevalence of sexual behavior stigma affecting gay men and other men who have sex with men across Sub-Saharan Africa and in the United States;Stahlman;JMIR Public Health Surveill,2016
4. Respondent-driven sampling: a new approach to the study of hidden populations;Heckathorn;Soc Probl,1997
5. Respondent-driven sampling ii: deriving valid population estimates from chain-referral samples of hidden populations;Heckathorn;Soc Probl,2002