[1] Kerman Univ Med Sci, HIV STI Surveillance Res Ctr, Kerman, Iran
[2] Kerman Univ Med Sci, WHO Collaborating Ctr HIV Surveillance, Inst Futures Studies Hlth, Kerman, Iran
[3] UNSW Sydney, Kirby Inst, Sydney, NSW, Australia
[4] Univ British Columbia, Fac Med, Sch Populat & Publ Hlth, Vancouver, BC, Canada
[5] Univ Calif San Francisco, Dept Epidemiol & Biostat, San Francisco, CA 94143 USA
[6] Univ Western Ontario, Schulich Sch Med & Dent, Dept Epidemiol & Biostat, London, ON, Canada