| Affiliation: | 1. Department of Internal Medicine, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea;2. Department of Internal Medicine, College of Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea;3. Department of Internal Medicine, College of Medicine, Severance Cardiovascular Hospital, Yonsei University, Seoul, Korea;4. Department of Internal Medicine, College of Medicine, Samsung Medical Center, Sungkyunkwan University, Seoul, Korea;5. Department of Internal Medicine, College of Medicine, Seoul National University Hospital, Seoul, Korea;6. Department of Internal Medicine, College of Medicine, Korea University Anam Hospital, Seoul, Korea;7. Department of Internal Medicine, College of Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea;8. Department of Internal Medicine, College of Medicine, Korea University Guro Hospital, Seoul, Korea;9. Department of Internal Medicine, College of Medicine, Catholic University of Daegu, Daegu, Korea;10. Department of Internal Medicine, College of Medicine, Kyungpook National University Hospital, Daegu, Korea;11. Department of Internal Medicine, College of Medicine, Chonbuk National University Hospital, Jeonju, Korea;12. Department of Internal Medicine, College of Medicine, Hanseo Hospital, Busan, Korea;13. Department of Internal Medicine, College of Medicine, Hanmaeum General Hospital, Jeju, Korea |
