1. Division of Orthopaedics, University of Toronto, Sunnybrook Health Science Center, Suite A-315, 2075 Bayview Avenue, North York, Ontario, Canada M4N 3M5.
2. Department of Orthopaedics, University of Washington, Harborview Medical Center, ZA-48, 325 Ninth Avenue, Seattle, Washington 98104, USA.
3. Division of Orthopaedics, University of Toronto, St Michael’s Hospital, 55 Queen Street, Suite 800, Toronto, Ontario, Canada M5C 1R6.
4. Department of Orthopaedics, Harvard University, Massachusetts General Hospital, 15 Parkman Street, Boston, Massachusetts 02114, USA.
5. Department of Orthopaedics, Loma Linda University Medical Center, Room A521, 11234 Anderson Street, Box 2000, Loma Linda, California 92354, USA.