@article{Abdul-Quader2006, author = {Abdul-Quader, A.S. and Heckathorn, D.D. and McKnight, C. and Bramson, H. and Nemeth, C. and Sabin, K.}, title= {Effectiveness of respondent-driven sampling for recruiting drug users in New York City: Findings from a pilot study}, year = {2006}, doi = {10.1007/s11524-006-9052-7}, journal = {Journal of Urban Health}, volume = {83}, number = {3}, pages = {459--476}, }