1. School of Nursing, University of Virginia, Charlottesville, VA 22908, USA
2. Division of Infectious Diseases and International Health, School of Medicine, University of Virginia, Charlottesville, VA 22908, USA
3. Department of Public Health Sciences, School of Medicine, University of Virginia, Charlottesville, VA 22908, USA
4. Kibong’oto Infectious Diseases Hospital, Kilimanjaro P.O. Box 447, Tanzania
5. Department of Medicine, Mbarara University of Science and Technology, Mbarara P.O. Box 1410, Uganda