作者单位：Sir Mortimer B Davis Jewish Hosp, Div Colon & Rectal Surg, Montreal, PQ, Canada[1]McGill Univ, Steinberg Bernstein Ctr Minimally Invas Surg & In, Montreal, PQ, Canada[2]Sir Mortimer B Davis Jewish Hosp, Montreal, PQ, Canada[3]CHU Sherbrooke, Sherbrooke, PQ, Canada[4]Sir Mortimer B Davis Jewish Hosp, Lady Davis Inst Med Res, Montreal, PQ, Canada[5]
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