| evaluating recruitment among female sex workers and injecting drug users at risk for hiv using respondent-driven sampling in estonia. | few recent publications have highlighted theoretical and methodological challenges using respondent-driven sampling (rds). to explore why recruitment with rds may work in some populations and not in others, we assess the implementation of rds to recruit female sex workers (fsws) and injection drug users (idus) into a human immunodeficiency virus biological and risk behavior survey in tallinn, estonia. recruitment of fsws was slower and more challenging than that of idus. the idu study recruited ... | 2010 | 20131018 |