TY - JOUR T1 - Correction JF - Canadian Medical Association Journal JO - CMAJ SP - 190 LP - 190-b DO - 10.1503/cmaj.071790 VL - 178 IS - 2 A2 - , Y1 - 2008/01/15 UR - http://www.cmaj.ca/content/178/2/190.3.abstract ER -