1. Section of Young Adult Hip Surgery, Division of Sports Medicine, Department of Orthopaedic Surgery, Rush Medical College of Rush University, Rush University Medical Center, Chicago, Illinois, USA
2. Department of Orthopaedic Surgery, Division of Sports Medicine, NYU Langone Orthopaedic Hospital, New York, NY, USA
3. Department of Orthpaedic Surgery, Division of Sports Medicine, Hospital for Special Surgery, New York, NY, USA
4. Department of Diagnostic Radiology, Rush Medical College of Rush University, Rush University Medical Center, Chicago, Illinois, USA