1. Duke University, Durham, North Carolina;
2. Kilimanjaro Christian Medical Centre, Moshi, Tanzania;
3. Kilimanjaro Christian Medical University College, Moshi, Tanzania;
4. Centre for International Health, University of Otago, Dunedin, New Zealand
5. Duke Global Health Institute, Duke University, Durham, North Carolina;
6. Division of Infectious Diseases and International Health, Department of Medicine, Duke University Medical Center, Durham, North Carolina;