PT - JOURNAL ARTICLE AU - Francis Sutherland TI - Author response to “Lever effect and the optical illusion of safety in laparoscopic cholecystectomy” AID - 10.1503/cjs.2164209 DP - 2021 Apr 01 TA - Canadian Journal of Surgery PG - E243--E243 VI - 64 IP - 2 4099 - http://canjsurg.ca/content/64/2/E243.3.short 4100 - http://canjsurg.ca/content/64/2/E243.3.full SO - CAN J SURG2021 Apr 01; 64