TY  - CONF
A1  - Merli, M.G.
A1  - Neely, W.W.
A1  - Gao, E.
A1  - Tu, X.
A1  - Chen, X.
A1  - Tian, F.
A1  - Gu, W.
A1  - Y., Yang
T1  - Sampling female sex workers in Shanghai using Respondent Driven Sampling
Y1  - 2008
CY  - Shanghai

ER  -