1. The Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Korea.
2. Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul, Korea.
3. Division of Nephrology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
4. Department of Transplantation Surgery, Yonsei University College of Medicine, Seoul, Korea.