PT - JOURNAL ARTICLE ED - , TI - Briefly AID - 10.1503/cmaj.109-4266 DP - 2012 Sep 04 TA - Canadian Medical Association Journal PG - E655--E658 VI - 184 IP - 12 4099 - http://www.cmaj.ca/content/184/12/E655.short 4100 - http://www.cmaj.ca/content/184/12/E655.full SO - CMAJ2012 Sep 04; 184