TY - JOUR T1 - Briefly JF - Canadian Medical Association Journal JO - CMAJ SP - E285 LP - E286 DO - 10.1503/cmaj.109-4444 VL - 185 IS - 7 A2 - , Y1 - 2013/04/16 UR - http://www.cmaj.ca/content/185/7/E285.abstract N2 - ER -