1. Harvard Vanguard Orthopedics and Sports Medicine, Brigham and Women’s/Faulkner Hospital, Harvard Medical School, Boston, Massachusetts, the
2. Department of Orthopaedic Surgery, Stanford University Medical Center, Stanford, California
3. Shoulder and Sports Medicine Service, Hospital for Special Surgery, New York, New York, the
4. Department of Orthopaedics, University of Freiburg, Freiburg, Germany, and
5. Santa Monica Orthopaedic and Sports Medicine Foundation, Santa Monica, California