1. Division of Infectious Disease, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
2. Infection Control Center, Seoul National University Bundang Hospital, Seongnam, Korea
3. Seoul National University College of Medicine, Seoul, Korea
4. Department of Laboratory Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
5. Construction & Engineering Team, Seoul National University Bundang Hospital5, Seongnam, Korea