1. 1Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan
2. 2Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
3. 3Department of Endocrinology and Metabolism, Kanagawa Children’s Medical Center, Yokohama, Japan
4. 4Division of Pediatrics, Department of Homeostatic Regulation and Development, Niigata University Graduate School of Medicine and Dental Sciences, Niigata, Japan
5. 5Center for Clinical Research, Keio University School of Medicine, Tokyo, Japan