@article{Wejnert2012,
author = {Wejnert, C. and Pham, H. and Krishna, N. and Le, B. and DiNenno, E.},
title= {Estimating design effect and calculating sample size for respondent-driven sampling studies of injection drug users in the United States},
year = {2012},
doi = {10.1007/s10461-012-0147-8},
journal = {AIDS and Behavior},
volume = {16},
number = {4},
pages = {797--806},
}