PT - JOURNAL ARTICLE ED - , TI - Briefly AID - 10.1503/cmaj.109-3713 DP - 2010 Nov 23 TA - Canadian Medical Association Journal PG - E756--E758 VI - 182 IP - 17 4099 - http://www.cmaj.ca/content/182/17/E756.short 4100 - http://www.cmaj.ca/content/182/17/E756.full SO - CMAJ2010 Nov 23; 182