PT - JOURNAL ARTICLE ED - , TI - Correction DP - 2002 Aug 20 TA - Canadian Medical Association Journal PG - 340--340-c VI - 167 IP - 4 4099 - http://www.cmaj.ca/content/167/4/340.4.short 4100 - http://www.cmaj.ca/content/167/4/340.4.full SO - CMAJ2002 Aug 20; 167