PT - JOURNAL ARTICLE ED - , TI - Correction AID - 10.1503/cmaj.081467 DP - 2008 Oct 07 TA - Canadian Medical Association Journal PG - 802--802 VI - 179 IP - 8 4099 - http://www.cmaj.ca/content/179/8/802.short 4100 - http://www.cmaj.ca/content/179/8/802.full SO - CMAJ2008 Oct 07; 179