1. Department of Orthopaedic Surgery, Trauma Surgery, Westchester Medical Center, New York Medical College, NY, USA
2. Department of Orthopedic Surgery, Sports Medicine and Hip Preservation, University of Wisconsin – Madison, Madison, WI, USA
3. Department of Medicine, Sports Medicine, New York, NY, USA
4. Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA