1. Department of Laboratory Medicine, Sanggye Paik Hospital, Inje University College of Medicine, Seou, Koreal
2. Greencross Reference Laboratory, Yongin, Korea
3. Department of Pediatrics, Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea
4. Department of Obstetrics and Gynecology, Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea