TY - JOUR T1 - Correction JF - Canadian Medical Association Journal JO - CMAJ SP - 344 LP - 344 DO - 10.1503/cmaj.081087 VL - 179 IS - 4 A2 - , Y1 - 2008/08/12 UR - http://www.cmaj.ca/content/179/4/344.abstract ER -