TY - JOUR A1 - Pollack, L.M. A1 - Osmond, D.H. A1 - Paul, J.P. A1 - Catania, J.A. T1 - Evaluation of the Center for Disease Control and Prevention’s HIV behavioral surveillance of men who have sex with men: Sampling issues Y1 - 2005 DO - 10.1097/01.olq.0000175419.02839.d6 JF - Sexually Transmitted Diseases VL - 32 IS - 9 SP - 581 EP - -589 ER -