1. Temerty Faculty of Medicine, University of Toronto , Toronto, Ontario
2. Department of Family Medicine, University of Ottawa , Ottawa, Ontario
3. Medical Sciences Division, University of Oxford , Oxford , UK
4. Department of Family Medicine, Western University , London, Ontario
5. Faculty of Medicine, University of Ottawa , Ottawa, Ontario
6. Department of Psychiatry, University of Oxford , Oxford , UK
7. Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford , Oxford , UK
8. Warwick Clinical Trials Unit, University of Warwick and Department of Plastic Surgery, Stoke Mandeville Hospital, Buckinghamshire Healthcare NHS Trust , Aylesbury , UK