PT - JOURNAL ARTICLE ED - , TI - Highlights DP - 2012 Mar 20 TA - Canadian Medical Association Journal PG - 503--503 VI - 184 IP - 5 4099 - http://www.cmaj.ca/content/184/5/503.short 4100 - http://www.cmaj.ca/content/184/5/503.full SO - CMAJ2012 Mar 20; 184