Affiliation: | 1. Duke University School of Medicine, Department of Infectious Disease, Box 102359, Durham, NC 27710, United States;2. Duke Center for Antimicrobial Stewardship and Infection Prevention, United States;3. Division of Infectious Diseases and International Health, Department of Medicine, University of Virginia, United States;4. Duke University School of Medicine, United States;5. University of Virginia School of Medicine, United States;6. Department of Epidemiology, University of North Carolina at Chapel Hill, United States;7. Department of Hospital Epidemiology, University of North Carolina Medical Center, United States |