1. Department of Pediatrics, Faculty of Medicine, Kagawa University, Kagawa, Japan
2. Department of Pediatrics, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
3. Department of Clinical Laboratory, Kagawa University Hospital, Kagawa, Japan
4. Department of Clinical Laboratory, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
5. Maternal Perinatal Center, Faculty of Medicine, Kagawa University, Kagawa, Japan
6. Department of Endocrinology and Metabolism, Faculty of Medicine, Kagawa University, Kagawa, Japan