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Kapadia F, Vlahov D, Des Jarlais DC, Strathdee SA, Ouellet L, Kerndt P, Morse E EV, Williams I, Garfein RS; Second Collaborative Injection Drug User Study (CIDUS-II) Group.Kapadia F, et al. Among authors: garfein rs.Epidemiology. 2002 Nov;13(6):738-41. doi: 10.1097/00001648-200211000-00023.Epidemiology. 2002.PMID: 12410020