1. Department of Orthopaedics, The Ohio State University School of Medicine, Columbus, Ohio
2. Green Mountain Orthopaedic Surgery, Berlin, Vermont
3. Orthopedic Institute of Wisconsin, Milwaukee, Wisconsin
4. Department of Orthopaedic Surgery, University of Iowa School of Medicine, Iowa City, Iowa
5. Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio
6. Department of Orthopaedic Surgery and Rehabilitation, Vanderbilt University Medical School, Nashville, Tennessee
7. Sports Medicine Division, Hospital for Special Surgery, New York, New York
8. Department of Orthopaedic Surgery, University of Colorado School of Medicine, Denver, Colorado
9. Department of Orthopaedic Surgery, Washington University School of Medicine, Barnes-Jewish Hospital, St. Louis, Missouri