1. Harvard Medical School, Boston, Massachusetts
2. Department of Orthopaedic Surgery, Brigham and Women’s Hospital, Boston, Massachusetts
3. Department of Surgery, Center for Surgery and Public Health, Brigham and Women’s Hospital, Boston, Massachusetts
4. Harvard Orthopaedic Trauma Initiative, Harvard Medical School, Boston, Massachusetts
5. Department of Orthopaedic Surgery, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark