TY - JOUR T1 - Briefly JF - Canadian Medical Association Journal JO - CMAJ SP - E153 LP - E155 DO - 10.1503/cmaj.109-4398 VL - 185 IS - 3 A2 - , Y1 - 2013/02/19 UR - http://www.cmaj.ca/content/185/3/E153.abstract ER -