[1] Massachusetts Gen Hosp, Ctr Global Hlth, Boston, MA 02114 USA
[2] Massachusetts Gen Hosp, Div Infect Dis, Boston, MA 02114 USA
[3] Mbarara Univ Sci & Technol, Dept Obstet & Gynaecol, Mbarara, Uganda
[4] Massachusetts Gen Hosp, Dept Obstet & Gynecol, Boston, MA 02114 USA