1Center for Metabolic Bone Disease and Molecular Research, Shriners Hospitals for Children – St. Louis, St. Louis, MO 63110, USA
2Division of Bone and Mineral Diseases, Department of Internal Medicine, Washington University School of Medicine at Barnes-Jewish Hospital, St. Louis, MO 63110, USA
3Department of Pediatric Orthopaedics, University of Arkansas for Medical Sciences at Arkansas Children’s Hospital, Little Rock, AR 72202, USA
4Pediatric Radiology Section, Mallinckrodt Institute of Radiology at St. Louis Children’s Hospital, Washington University School of Medicine, St. Louis, MO 63110, USA
5Division of Endocrinology and Metabolism, Center for Osteoporosis and Metabolic Bone Diseases, Department of Internal Medicine, Little Rock, AR 72201, USA
6Department of Cardiometabolic Disorders Research, Amgen Inc., Thousand Oaks, CA 91320, USA
7Departments of Pediatrics and Orthopedics, Children’s Hospital and University of Nebraska Medical Center, Omaha, NE 68198, USA