1. Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea.
2. Department of Non-benefits Management, National Health Insurance Service, Wonju, Korea.
3. Hanyang University Guri Hospital, Guri, Korea.
4. Divison of Infectious Diseases, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Korea.
5. Department of Internal Medicine, Kyung Hee University College of Medicine, Seoul, Korea.
6. Department of Infectious Diseases, Chonnam National University Medical School, Gwangju, Korea.
7. Division of Infectious Diseases, Department of Internal Medicine, Korea University Ansan Hospital, Ansan, Korea.
8. Division of Infectious Diseases, Chungnam National University School of Medicine, Daejeon, Korea.
9. Department of Internal Medicine and Research Institute of Clinical Medicine, Jeonbuk National University Medical School and Hospital, Jeonju, Korea.
10. Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea.
11. Department of Internal Medicine, Pusan National University School of Medicine, Busan, Korea.
12. Division of Infectious Diseases, Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea.
13. Division of Infectious Diseases, Department of Internal Medicine, Hallym University, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea.
14. Department of Internal Medicine, Ewha Womans University College of Medicine, Seoul, Korea.
15. Department of Infectious Diseases, Daegu Fatima Hospital, Daegu, Korea.
16. Department of Infectious Diseases, Bucheon Sejong Hospital, Bucheon, Korea.
17. Division of Infectious Diseases, Samsung Changwon Hospital, Sungkyunkwan University, Changwon, Korea.
18. Division of Infectious Diseases, Dongguk University Ilsan Hospital, Goyang, Korea.
19. Department of Infectious Diseases, International St. Mary’s Hospital, Catholic Kwandong University College of Medicine, Incheon, Korea.