1. Division of Endocrinology and Metabolism, National Center for Child Health and Development, Tokyo, Japan
2. Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
3. Department of Human Genetics, National Research Institute for Child Health and Development, Tokyo, Japan
4. Department of Pediatrics, University of Illinois at Chicago, Chicago, Illinois, U.S.A.
5. Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan