[1] Univ Minnesota, Sch Med, Ctr HIV STI Intervent & Prevent Studies, Dept Epidemiol & Community Hlth, Minneapolis, MN 55454 USA
[2] Univ Minnesota, Sch Med, Ctr HIV STI Intervent & Prevent Studies, Dept Family Med & Community Hlth, Minneapolis, MN 55454 USA
[3] Univ Texas Houston, Sch Publ Hlth, Ctr Hlth Promot & Prevent Res, Houston, TX USA
[4] Univ Minnesota, Inst Technol, Dept Comp Sci & Engn, Minneapolis, MN 55454 USA
[5] Univ Minnesota, Dept Rhetor, Minneapolis, MN 55454 USA
[6] Columbia Univ, HIV Ctr Clin & Behav Sci, New York, NY USA
[7] Pan Amer Hlth Org World Hlth Org Amer, Washington, DC USA