1. Department of Obstetrics and Gynecology, University of Pennsylvania, Philadelphia, PA, USA
2. Brandeis University, Waltham, MA, USA
3. Department of Obstetrics and Gynecology, Massachusetts General Hospital, Boston, MA, USA
4. Department of Obstetrics and Gynaecology, Mbarara University of Science and Technology, Mbarara, Uganda
5. Department of Pathology, Massachusetts General Hospital, Boston, MA, USA
6. Infectious Diseases Division, Massachusetts General Hospital, Boston, MA, USA
7. Center for Global Health, Massachusetts General Hospital, Boston, MA, USA