1. The Research Institute for Transplantation, Severance Hospital, Yonsei University Health System, Seoul, Korea.
2. Department of Transplantation Surgery, Severance Hospital, Yonsei University Health System, Seoul, Korea.
3. Department of Internal Medicine, Seoul St. Mary Hospital, The Catholic University of Korea, Seoul, Korea.
4. Department of Pathology, Yonsei University College of Medicine, Seoul, Korea.
5. Department of Pathology, Seoul St. Mary Hospital, The Catholic University of Korea, Seoul, Korea.
6. Department of Internal Medicine, Severance Hospital, Yonsei University Health System, Seoul, Korea.