1. Walter Reed National Military Medical Center, Department of Orthopaedic Surgery, Bethesda, Maryland, USA
2. Uniformed Services University of the Health Sciences, Department of Surgery, Bethesda, Maryland, USA
3. John A. Feagin Jr. Sports Medicine Fellowship, Keller Army Community Hospital, United States Military Academy, West Point, New York, USA
4. Brown University Alpert Medical School, Providence, Rhode Island, USA
5. United States Naval Academy, Department of Orthopaedic Surgery, Annapolis, Maryland, USA
6. Vanderbilt Orthopaedics, Nashville, Tennessee, USA
7. Department of Orthopedic Surgery, Keller Army Community Hospital, West Point, New York, USA
8. Department of Orthopaedic Surgery, Evans Army Community Hospital, Fort Carson, Colorado, USA
9. Womack Army Medical Center, Fort Bragg, North Carolina, USA
10. Duke University, Department of Orthopaedic Surgery, Durham, North Carolina, USA
11. Department of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden