[1] Univ Washington, Harborview Med Ctr, Dept Med, Seattle, WA 98104 USA
[2] Univ Washington, Harborview Med Ctr, Dept Epidemiol, Seattle, WA 98104 USA
[3] Univ Washington, Harborview Med Ctr, Ctr AIDS & STD, Seattle, WA 98104 USA
[4] Univ Fez, Dept Sociol, Fez, Morocco
[5] Minist Publ Hlth, Rabat, Morocco