1. Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
2. Partners In Health, Boston, Massachusetts, USA; and Abwenzi Pa Za Umoyo, Neno, Malawi
3. Abwenzi Pa Za Umoyo, Neno, Malawi
4. Partners In Health, Boston, Massachusetts, USA; and Department of Global Health and Social Medicine, Harvard Medical School, Cambridge, Massachusetts, USA
5. Partners In Health, Boston, Massachusetts, USA
6. Ministry of Health, Neno District, Malawi
7. Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA; and Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, Michigan, USA
8. Department of Global Health and Social Medicine, Harvard Medical School, Cambridge, Massachusetts, USA