PT - JOURNAL ARTICLE ED - , TI - Correction DP - 2000 Mar 07 TA - Canadian Medical Association Journal PG - 634--634-a VI - 162 IP - 5 4099 - http://www.cmaj.ca/content/162/5/634.2.short 4100 - http://www.cmaj.ca/content/162/5/634.2.full SO - CMAJ2000 Mar 07; 162