RT Journal Article SR Electronic T1 Blinding: Who, what, when, why, how? JF Canadian Journal of Surgery JO CAN J SURG FD Canadian Medical Association SP 345 OP 348 VO 53 IS 5 A1 Paul J. Karanicolas A1 Forough Farrokhyar A1 Mohit Bhandari YR 2010 UL http://canjsurg.ca/content/53/5/345.abstract