1 Division of Infectious Diseases, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, Utah.
2 Division of Microbiology & Immunology, Department of Pathology, University of Utah School of Medicine, Salt Lake City, Utah.
3 Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
4 Division of Infectious Disease, Massachusetts General Hospital, Boston, Massachusetts.
5 Department of Medicine, Harvard Medical School, Boston, Massachusetts.
6 Department of Immunology and Infectious diseases, Harvard School of Public Health, Boston, Massachusetts.