| Affiliation: | 1. Department of Medicine, Kyung Hee University School of Medicine, Seoul, Korea;2. Department of Medicine, Dankook University College of Medicine, Cheonan, Korea;3. Department of Medicine, Soonchunhyang University College of Medicine, Seoul, Korea;4. Department of Medicine, Catholic University College of Medicine, Seoul, Korea;5. Department of Medicine, Jeju National University School of Medicine, Jeju, Korea;6. Department of Medicine, Chosun University College of Medicine, Gwangju, Korea;7. Department of Medicine, Yonsei University College of Medicine, Seoul, Korea;8. Department of Medicine, Konyang University College of Medicine, Daejeon, Korea;9. Department of Medicine, Chonnam National University Medical School, Gwangju, Korea;10. Department of Medicine, Inje University College of Medicine, Seoul, Korea;11. Department of Medicine, Ewha Womans University School of Medicine, Seoul, Korea |
