1. Division of Infectious Diseases, Department of Internal Medicine, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
2. Division of Infectious Diseases, Department of Internal Medicine, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Seoul, Korea.
3. Division of Healthcare Technology Assessment Research, National Evidence-Based Healthcare Collaborating Agency, Seoul, Korea.
4. Department of Laboratory Medicine, Daejeon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
5. Division of Gastroenterology, Department of Internal Medicine, Inha University College of Medicine, Incheon, Korea.
6. Division of Infectious Diseases, Department of Internal Medicine, Hallym University, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea.
7. Division of Infectious Diseases, Department of Internal Medicine, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea.
8. Division of Infectious Diseases, Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
9. Division of Infectious Diseases, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Sungnam, Korea.