1. Department of Surgery; Yonsei University Wonju College of Medicine, Wonju Severance Christian Hospital; Wonju Korea
2. Department of Pathology; Yonsei University Wonju College of Medicine, Wonju Severance Christian Hospital; Wonju Korea
3. Graduate School of Yonsei University; Seoul Korea
4. Department of Internal Medicine; Yonsei University Wonju College of Medicine, Wonju Severance Christian Hospital; Wonju Korea