PT - JOURNAL ARTICLE ED - , TI - Corrections AID - 10.1503/cmaj.050908 DP - 2005 Aug 16 TA - Canadian Medical Association Journal PG - 345--345-c VI - 173 IP - 4 4099 - http://www.cmaj.ca/content/173/4/345.4.short 4100 - http://www.cmaj.ca/content/173/4/345.4.full SO - CMAJ2005 Aug 16; 173