1. Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
2. Division of Antimicrobial Resistance, Center for Infectious Disease, National Institute of Health, Korea Center for Disease Control and Prevention (KCDC), Osong, Republic of Korea
3. Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
4. Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
5. Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea