PT - JOURNAL ARTICLE ED - , TI - Corrections DP - 2000 Jan 11 TA - Canadian Medical Association Journal PG - 19--19-d VI - 162 IP - 1 4099 - http://www.cmaj.ca/content/162/1/19.5.short 4100 - http://www.cmaj.ca/content/162/1/19.5.full SO - CMAJ2000 Jan 11; 162