1. Division of Sports Medicine, Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, California, USA.
2. Division of Sports Medicine, Department of Orthopaedic Surgery, Rush University Medical Center / Midwest Orthopedics, Chicago, Illinois, USA.
3. Department of Orthopaedic Surgery, University of Rochester, Rochester, New York, USA.
4. Houston Methodist Orthopedic and Sports Medicine, Houston, Texas, USA.