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