1. Department of Pediatrics, Gyeongsang Institute of Health Science, Gyeongsang National University School of Medicine, Jinju, Korea.
2. Department of Laboratory Medicine, Inje University Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea.
3. Department of Pediatrics, Inje University Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea.