PT - JOURNAL ARTICLE ED - , TI - Correction DP - 2004 Feb 03 TA - Canadian Medical Association Journal PG - 320--320-b VI - 170 IP - 3 4099 - http://www.cmaj.ca/content/170/3/320.3.short 4100 - http://www.cmaj.ca/content/170/3/320.3.full SO - CMAJ2004 Feb 03; 170