1. Division of Transfusion Medicine and Cell Therapy, Department of Laboratory Medicine, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Republic of Korea
2. Innovative Cell and Gene Therapy Center, International St. Mary’s Hospital, 25 Simgok-ro, 100 beon-gil, Seo-gu, Incheon 404-834, Republic of Korea