作者单位:McMaster Univ, Fac Hlth Sci, Hamilton, ON, Canada[1]McMaster Univ, Michael G DeGroote Sch Med, Hamilton, ON, Canada[2]McMaster Univ, Dept Hlth Res Methods Evidence & Impact, Hamilton, ON, Canada[3]Univ Pittsburgh, Med Ctr, Dept Orthopaed Surg, Pittsburgh, PA USA[4]McMaster Univ, Dept Surg, Div Orthopaed Surg, Hamilton, ON, Canada[5]