TY - JOUR T1 - Yearbook of Surgery 1998 JF - Canadian Journal of Surgery JO - CAN J SURG SP - 450 LP - 450 VL - 42 IS - 6 AU - Christopher J. de Gara Y1 - 1999/12/01 UR - http://canjsurg.ca/content/42/6/450.2.abstract ER -