[1] NYU, Dept Epidemiol, Sch Global Publ Hlth, New York, NY 10012 USA
[2] Ctr Drug Use & HIV HCV Res, New York, NY USA
[3] Southern Illinois Univ, Dept Sociol, Carbondale, IL USA
[4] Univ Chicago, Dept Med, 5841 S Maryland Ave, Chicago, IL 60637 USA
[5] SIU Sch Med, Dept Populat Sci & Policy, Springfield, IL USA
[6] Community Act Pl Inc, Murphysboro, IL USA
[7] NYU, Dept Populat Hlth, Grossman Sch Med, New York, NY USA
[8] Univ Illinois, Sch Publ Hlth, Div Epidemiol & Biostat, Chicago, IL USA