1. Department of Pathology, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
2. Department of Surgery, Kyung Hee University Hospital, Kyung Hee University College of Medicine, Seoul, Korea
3. Department of Internal Medicine, Kyung Hee University Hospital, Kyung Hee University College of Medicine, Seoul, Korea
4. Department of Pathology, Kyung Hee University Hospital, Kyung Hee University College of Medicine, Seoul, Korea