1. Infection Prevention & Control Team, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
2. Occupational Safety & Health management Team, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
3. Division of Infectious Diseases, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
4. Department of Laboratory Medicine and Genetics, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
5. Department of Nursing, Soonchunhyang University College of Medicine5, Cheonan, Korea