PT - JOURNAL ARTICLE ED - , TI - Correction DP - 2003 Sep 30 TA - Canadian Medical Association Journal PG - 652--652-a VI - 169 IP - 7 4099 - http://www.cmaj.ca/content/169/7/652.2.short 4100 - http://www.cmaj.ca/content/169/7/652.2.full SO - CMAJ2003 Sep 30; 169