Affiliation: | 1. Department of Internal Medicine, University of Inje College of Medicine, Seoul Paik Hospital, Seoul, Republic of Korea;2. Department of Internal Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea;3. Department of Internal Medicine, University of Ulsan College of Medicine, Ulsan University Hospital, Ulsan, Republic of Korea;4. Department of Internal Medicine, Hallym University College of Medicine, Kangdong Sacred Heart Hospital, Seoul, Republic of Korea |