1. Department of Internal Medicine, Gangneung Asan Hospital, College of Medicine, University of Ulsan, Gangneung, Korea.
2. Department of Diagnostic Radiology, Gangneung Asan Hospital, College of Medicine, University of Ulsan, Gangneung, Korea.
3. Department of Pathology, Gangneung Asan Hospital, College of Medicine, University of Ulsan, Gangneung, Korea.