1. Department of Radiology, Children’s Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, California 90027
2. Department of Pediatrics, Children’s Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, California 90027
3. Department of Orthopaedic Surgery, Children’s Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, California 90027
4. Laboratory of Pediatric Endocrinology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
5. Center for Clinical and Translational Research, Maine Medical Center Research Institute, Scarborough, Maine 04074