1. Conversant Research Consortium in Immunologic Disease, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 137-040, Korea.
2. Rheumatism Research Center, Catholic Institute of Medical Science, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 137-040, Korea.
3. Transplant Research Center, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 137-040, Korea.
4. Division of Nephrology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 137-040, Korea.
5. Department of Hematology, Catholic Blood and Marrow Transplantation Center, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 137-040, Korea.