1. Department of Laboratory Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
2. Catholic Genetic Laboratory Center, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
3. Department of Hematology, Catholic Blood and Marrow Transplantation Center, Seoul St. Mary's Hospital, Leukemia Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Korea