PT - JOURNAL ARTICLE ED - , TI - Corrections AID - 10.1503/cmaj.081375 DP - 2008 Sep 23 TA - Canadian Medical Association Journal PG - 678--678-c VI - 179 IP - 7 4099 - http://www.cmaj.ca/content/179/7/678.4.short 4100 - http://www.cmaj.ca/content/179/7/678.4.full SO - CMAJ2008 Sep 23; 179