Affiliation: | 1. Department of Pediatrics, Washington University School of Medicine, St. Louis Children's Hospital, St. Louis, Missouri;2. Department of Pediatrics, University of Pennsylvania, Philadelphia, Pennsylvania;3. Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania;4. Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan;5. Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan |