RT Journal Article SR Electronic T1 Preoperative fasting JF Canadian Journal of Surgery JO CAN J SURG FD Canadian Medical Association SP 218 OP 219 VO 49 IS 3 A1 Søreide, Eldar A1 Ljungqvist, Olle YR 2006 UL http://canjsurg.ca/content/49/3/218.abstract