TY - JOUR T1 - Query JF - Canadian Medical Association Journal JO - CMAJ SP - 1256 LP - 1256 DO - 10.1503/cmaj.050220 VL - 172 IS - 9 A2 - , Y1 - 2005/04/26 UR - http://www.cmaj.ca/content/172/9/1256.abstract ER -