1. Department of Infectious Diseases, Internal Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
2. Division of Infectious Diseases, University of North Carolina, Chapel Hill, North Carolina, USA
3. Hospital Epidemiology, University of North Carolina Health, Chapel Hill, North Carolina, USA
4. Duke Center for Antimicrobial Stewardship and Infection Prevention, Division of Infectious Diseases, Duke University Medical Center, Durham, North Carolina, USA