1. Division of Pediatric Orthopaedics, Phoenix Children’s Hospital, 1919 East Thomas Road, 85016, Phoenix, AZ USA
2. Department of Orthopaedics and Rehabilitation, Penn State Hershey Medical Center, The Pennsylvania State University College of Medicine, Hershey, PA USA
3. Division of Pediatric Neurosurgery, Connecticut Children’s Medical Center, Hartford, CT USA