PT - JOURNAL ARTICLE ED - , TI - Correction DP - 2001 May 01 TA - Canadian Medical Association Journal PG - 1280--1280-d VI - 164 IP - 9 4099 - http://www.cmaj.ca/content/164/9/1280.5.short 4100 - http://www.cmaj.ca/content/164/9/1280.5.full SO - CMAJ2001 May 01; 164