PT - JOURNAL ARTICLE ED - , TI - Briefly AID - 10.1503/cmaj.109-4544 DP - 2013 Aug 06 TA - Canadian Medical Association Journal PG - E527--E529 VI - 185 IP - 11 4099 - http://www.cmaj.ca/content/185/11/E527.short 4100 - http://www.cmaj.ca/content/185/11/E527.full SO - CMAJ2013 Aug 06; 185