TY - JOUR T1 - Briefly JF - Canadian Medical Association Journal JO - CMAJ SP - E301 LP - E303 DO - 10.1503/cmaj.109-4148 VL - 184 IS - 6 A2 - , Y1 - 2012/04/03 UR - http://www.cmaj.ca/content/184/6/E301.abstract ER -