TY - JOUR T1 - Briefly JF - Canadian Medical Association Journal JO - CMAJ SP - E254 LP - E255 DO - 10.1503/cmaj.109-4136 VL - 184 IS - 5 A2 - , Y1 - 2012/03/20 UR - http://www.cmaj.ca/content/184/5/E254.abstract ER -