1 Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan ; Department of Endocrinology and Metabolism, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan.
2 Department of Genetic Research, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan.
3 Department of Endocrinology and Metabolism, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan.
4 Department of Radiology, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan.
5 Department of Endocrinology and Metabolism, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan ; Department of Genetic Research, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan.