1. Department of Orthopaedic Surgery, New York University Langone Orthopedic Hospital, New York, NY, USA
2. The Hip Center, Andrews Sports Medicine and Orthopedic Center, Birmingham, AL, USA
3. Division of Paediatric Orthopaedic Surgery, Department of Orthopaedic Surgery, Hassenfeld Children’s Hospital at NYU Langone, New York, NY, USA
4. Division of Sports Medicine, Department of Orthopedic Surgery, NYU Langone Orthopedic Center, New York, NY, USA