1. Hospital for Special Surgery, New York, NY, USA
2. George Washington University School of Medicine & Health Sciences, Washington, DC, USA
3. University College London Hospitals NHS Foundation Trust and Institute of Sport, Exercise & Health, London, UK
4. Duke University Health System, Durham, NC, USA
5. OrthoCarolina, Charlotte, NC, USA
6. Royal North Shore Hospital, St. Leonards, NSW, Australia
7. Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL, USA
8. Department of Orthopaedics, The University of British Columbia, Vancouver, BC, Canada