1. Department of Laboratory Medicine and Genetics, Soonchunhyang University Bucheon Hospital, Soonchunhyang Univerisity College of Medicine, Bucheon 420-767, Korea.
2. Department of Pediatrics, Soonchunhyang University Hospital, Soonchunhyang University College of Medicine, Seoul 140-743, Korea.
3. R&D Center, Equispharm Co., Ltd, Suwon 443-766, Korea.
4. Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 135-710, Korea.
5. Department of Laboratory Medicine, Soonchunhyang University Gumi Hospital, Soonchunhyang Univerisity College of Medicine, Gumi 730-706, Korea.
6. Department of Laboratory Medicine, Soonchunhyang University Hospital, Soonchunhyang University College of Medicine, Seoul 140-743, Korea.