PT - JOURNAL ARTICLE ED - , TI - Correction DP - 2004 May 25 TA - Canadian Medical Association Journal PG - 1650--1650-a VI - 170 IP - 11 4099 - http://www.cmaj.ca/content/170/11/1650.2.short 4100 - http://www.cmaj.ca/content/170/11/1650.2.full SO - CMAJ2004 May 25; 170