PT - JOURNAL ARTICLE ED - , TI - Briefly AID - 10.1503/cmaj.109-3286 DP - 2010 Jul 13 TA - Canadian Medical Association Journal PG - E453--E456 VI - 182 IP - 10 4099 - http://www.cmaj.ca/content/182/10/E453.short 4100 - http://www.cmaj.ca/content/182/10/E453.full SO - CMAJ2010 Jul 13; 182