PT - JOURNAL ARTICLE ED - , TI - Corrections AID - 10.1503/cmaj.051576 DP - 2006 Jan 03 TA - Canadian Medical Association Journal PG - 67--67 VI - 174 IP - 1 4099 - http://www.cmaj.ca/content/174/1/67.1.short 4100 - http://www.cmaj.ca/content/174/1/67.1.full SO - CMAJ2006 Jan 03; 174