1. Center for Shoulder, Elbow, and Sports Medicine, Department of Orthopaedic Surgery, Columbia University, New York, New York
2. Center for Sports Medicine, Rothman Institute, Department of Orthopaedic Surgery, Thomas Jefferson University, Philadelphia, Pennsylvania
3. Centre for Sports and Exercise Medicine, Queen Mary University, London, United Kingdom
4. Department of Trauma and Orthopaedics, Campus Biomedico University, Rome, Italy
5. Center for Sports Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania