PT - JOURNAL ARTICLE ED - , TI - Correction DP - 2004 Feb 17 TA - Canadian Medical Association Journal PG - 451--451 VI - 170 IP - 4 4099 - http://www.cmaj.ca/content/170/4/451.short 4100 - http://www.cmaj.ca/content/170/4/451.full SO - CMAJ2004 Feb 17; 170