1 Division of Infectious Diseases, Department of Medicine, University of Kansas, Kansas City, KS 66160, USA. Electronic address: nbahr@kumc.edu.
2 Division of Infectious Diseases and International Medicine, Department of Medicine, University of Minnesota, Minneapolis, MN, USA.
3 Infectious Disease Institute, Makerere University, Kampala, Uganda; Department of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, UK.