1. Department of Population Health Sciences, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
2. Division of Infectious Disease, Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
3. Division of General, Geriatric, Palliative and Hospital Medicine, Department of Medicine, School of Medicine, University of Virginia, Charlottesville, VA, USA
4. Division of Infectious Diseases and International Health, Department of Medicine, School of Medicine, University of Virginia, Charlottesville, VA, USA
5. William S. Middleton Memorial Veterans Affairs Hospital, Madison, WI, USA
6. Department of Infection Control, University of Wisconsin Hospital and Clinics, Madison, WI, USA