1. Department of Orthopaedic Surgery, University of California, San Francisco, California, USA
2. Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland, USA
3. Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, Canada
4. Steadman Philippon Research Institute, Center for Regenerative & Personalized Medicine, Vail, Colorado, USA
5. Department of Orthopaedic Surgery, Orthopaedic Trauma Institute, University of California, San Francisco, California, USA
6. Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Canada