TY - JOUR T1 - Briefly JF - Canadian Medical Association Journal JO - CMAJ SP - E901 LP - E903 DO - 10.1503/cmaj.109-4323 VL - 184 IS - 17 A2 - , Y1 - 2012/11/20 UR - http://www.cmaj.ca/content/184/17/E901.abstract N2 - ER -