| Affiliation: | 1. Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea;2. Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea;3. Department of Internal Medicine, Hallym University College of Medicine, Hwaseong, South Korea;4. Department of Internal Medicine, Soonchunhyang University College of Medicine, Seoul, South Korea;5. Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea;6. Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea;7. Department of Internal Medicine, Konkuk University School of Medicine, Seoul, South Korea;8. Department of Internal Medicine, Chung‐Ang University College of Medicine, Seoul, South Korea;9. Department of Internal Medicine, The Catholic University of Korea College of Medicine, Incheon, South Korea |
