PT - JOURNAL ARTICLE ED - , TI - Correction AID - 10.1503/cmaj.110-2053 DP - 2010 Apr 20 TA - Canadian Medical Association Journal PG - 700--700-d VI - 182 IP - 7 4099 - http://www.cmaj.ca/content/182/7/700.5.short 4100 - http://www.cmaj.ca/content/182/7/700.5.full SO - CMAJ2010 Apr 20; 182