1. Division of Global Health Equity, Brigham and Women's Hospital, Boston, Massachusetts, USA, Department of Global Health and Social Medicine, Harvard Medical School, Boston, Massachusetts, USA
2. Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts, USA
3. Clinton Health Access Initiative, Kigali, Rwanda
4. National Tuberculosis Control Programme, Lilongwe, Malawi
5. Division of Global Health Equity, Brigham and Women's Hospital, Boston, Massachusetts, USA, Department of Global Health and Social Medicine, Harvard Medical School, Boston, Massachusetts, USA, Partners in Health, Boston, Massachusetts,
USA