1. Department of Internal Medicine, Kangwon National University Hospital, Kangwon National University School of Medicine, Chuncheon, Korea.
2. Department of Anatomic Pathology, Kangwon National University Hospital, Kangwon National University School of Medicine, Chuncheon, Korea.
3. Department of Radiology, Kangwon National University Hospital, Kangwon National University School of Medicine, Chuncheon, Korea.