[1] Univ Oxford, Nuffield Dept Orthopaed Rheumatol & Musculoskelet, Oxford, England
[2] Univ Ottawa, Dept Family Med, Ottawa, ON, Canada
[3] Mem Univ Newfoundland, Fac Med, St John, NF, Canada
[4] Univ Ottawa, Dept Med, Ottawa, ON, Canada
[5] McMaster Univ, Dept Biochem & Biomed Sci, Hamilton, ON, Canada
[6] Univ Toronto, Temerty Fac Med, Toronto, ON, Canada
[7] Univ Toronto, Temerty Fac Med, Dept Med Imaging, Toronto, ON, Canada
[8] Univ Toronto, Hosp Sick Children, Temerty Fac Med, Dept Diagnost & Intervent Radiol, Toronto, ON, Canada