TY - JOUR A1 - Yeka, W. A1 - Maibani–Michie, G. A1 - Prybylski, D. A1 - Colby, D. T1 - Application of respondent driven sampling to collect baseline data on FSWs and MSM for HIV risk reduction interventions in two urban centres in Papua New Guinea Y1 - 2006 DO - 10.1007/s11524-006-9103-0 JF - Journal of Urban Health VL - 83 IS - Suppl. 1 SP - 60 EP - -72 ER -