PT - JOURNAL ARTICLE ED - , TI - Corrections AID - 10.1503/cmaj.081980 DP - 2009 Jan 06 TA - Canadian Medical Association Journal PG - 79--79-a VI - 180 IP - 1 4099 - http://www.cmaj.ca/content/180/1/79.2.short 4100 - http://www.cmaj.ca/content/180/1/79.2.full SO - CMAJ2009 Jan 06; 180