1. Division of Infectious Diseases, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam, Korea.
2. Department of Anesthesiology and Pain Medicine, Anam Hospital, Korea University College of Medicine, Seoul, Korea.
3. Department of Obstetrics and Gynecology, Korea University College of Medicine, Seoul, Korea.
4. Department of Thoracic and Cardiovascular Surgery, Korea University College of Medicine, Seoul, Korea.
5. Department of Orthopedic Surgery, Korea University College of Medicine, Seoul, Korea.