1. Department of Internal Medicine, Mbarara University of Science and Technology, P.O. Box 1410, Mbarara, Uganda
2. Department of Internal Medicine, Mbarara Regional Referral Hospital, P.O. Box 1410, Mbarara, Uganda
3. Department of Medicine, University of California, San Francisco, P.O. Box 0886, CA 94143, USA
4. Department of Obstetrics, Gynecology, and Reproductive Services, University of California, San Francisco, CA 94143, USA
5. Division of Infectious Diseases and Center for Global Health, Massachusetts General Hospital, Boston, MA 02114, USA
6. Division of Infectious Disease, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA
7. Department of Epidemiology and Biostatistics, University of California, San Francisco, CA 94107, USA