1. Division of Nephrology, Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
2. Department of Medicine and Geriatrics, Kwong Wah Hospital, Hong Kong, China
3. Transplant Research Center, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
4. Division of Nephrology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
5. Division of Vascular and Transplant Surgery, Department of Surgery, College of Medicine, The Catholic University of Korea, Seoul, Korea