Affiliation: | 1. Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea;2. Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea;3. Department of Medicine, Jeju National University Hospital, Jeju, South Korea;4. Department of Medicine, Kangbook Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea |