1. Infectious Disease Institute, Makerere University, Kampala, Uganda.
2. Division of Infectious Diseases and International Medicine, Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA.
3. Department of Experimental and Clinical Pharmacology, College of Pharmacy, University of Minnesota, Minneapolis, Minnesota, USA.
4. Division of Infectious Diseases, School of Medicine, University of Colorado, Aurora, Colorado, USA.
5. Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, Minnesota, USA.