PT - JOURNAL ARTICLE ED - , TI - Corrections AID - 10.1503/cmaj.051428 DP - 2005 Dec 06 TA - Canadian Medical Association Journal PG - 1490--1490-c VI - 173 IP - 12 4099 - http://www.cmaj.ca/content/173/12/1490.4.short 4100 - http://www.cmaj.ca/content/173/12/1490.4.full SO - CMAJ2005 Dec 06; 173