1. Department of Microbiology and Immunology, University of Minnesota, Minneapolis, Minnesota, USA
2. Biology Department, St. Catherine University, St. Paul, Minnesota, USA
3. Department of Pathology and Laboratory Medicine, University of North Carolina—Chapel Hill, Chapel Hill, North Carolina, USA
4. Infectious Diseases Institutes and School of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda
5. Department of Medicine, University of Cape Town and Groote Schuur Hospital, Cape Town, South Africa
6. Department of Medicine, Mbarara University of Science and Technology, Mbarara, Uganda
7. Department of Medicine, University of Minnesota, Minneapolis, Minnesota, USA