TY - JOUR T1 - Query JF - Canadian Medical Association Journal JO - CMAJ SP - 548 LP - 548 DO - 10.1503/cmaj.051341 VL - 175 IS - 5 A2 - , Y1 - 2006/08/29 UR - http://www.cmaj.ca/content/175/5/548.abstract ER -