[1] Botswana UPenn Partnership BUP, Gaborone, Botswana
[2] Univ Calif Los Angeles, Dept Med, Div Infect Dis & Global Hlth, Los Angeles, CA USA
[3] Botswana Harvard AIDS Inst Partnership BHP, Gaborone, Botswana
[4] Rutgers Global Hlth Inst, New Brunswick, NJ USA
[5] Univ Botswana, Fac Med, Gaborone, Botswana
[6] Univ Calif Los Angeles, Dept Med, Los Angeles, CA USA
[7] Univ Edinburgh, MRC Ctr Reprod Hlth, Edinburgh, Midlothian, Scotland