TY - JOUR T1 - Correction: Research JF - Canadian Medical Association Journal JO - CMAJ SP - 806 LP - 806-a DO - 10.1503/cmaj.110-2068 VL - 182 IS - 8 A2 - , Y1 - 2010/05/18 UR - http://www.cmaj.ca/content/182/8/806.2.abstract ER -