PT - JOURNAL ARTICLE ED - , TI - Briefly AID - 10.1503/cmaj.109-4444 DP - 2013 Apr 16 TA - Canadian Medical Association Journal PG - E285--E286 VI - 185 IP - 7 4099 - http://www.cmaj.ca/content/185/7/E285.short 4100 - http://www.cmaj.ca/content/185/7/E285.full SO - CMAJ2013 Apr 16; 185