[1] Univ Chicago, Pritzker Sch Med, Chicago, IL 60637 USA
[2] NYU, Rory Meyers Coll Nursing, New York, NY USA
[3] NYU, Dept Populat Hlth, Grossman Sch Med, New York, NY USA
[4] Univ Illinois, Sch Publ Hlth, COIP Epidemiol & Biostat, Chicago, IL USA
[5] Cornell Univ, Africana Studies & Res Ctr, Ithaca, NY USA
[6] Univ Chicago, Med Ctr, Dept Med, Sect Infect Dis, Chicago, IL 60637 USA