TY - JOUR T1 - Briefly JF - Canadian Medical Association Journal JO - CMAJ SP - E945 LP - E948 DO - 10.1503/cmaj.109-4343 VL - 184 IS - 18 A2 - , Y1 - 2012/12/11 UR - http://www.cmaj.ca/content/184/18/E945.abstract ER -