PT - JOURNAL ARTICLE ED - , TI - Corrections AID - 10.1503/cmaj.071071 DP - 2007 Aug 28 TA - Canadian Medical Association Journal PG - 489--489-b VI - 177 IP - 5 4099 - http://www.cmaj.ca/content/177/5/489.3.short 4100 - http://www.cmaj.ca/content/177/5/489.3.full SO - CMAJ2007 Aug 28; 177