TY - JOUR T1 - Correction JF - Canadian Medical Association Journal JO - CMAJ SP - 579 LP - 579 DO - 10.1503/cmaj.051025 VL - 173 IS - 6 A2 - , Y1 - 2005/09/13 UR - http://www.cmaj.ca/content/173/6/579.abstract ER -