RT Journal Article SR Electronic T1 The authors respond JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1176 OP 1176 DO 10.1503/cmaj.112-2055 VO 184 IS 10 A1 Johnson, Davin E. A1 Hollands, Hussein YR 2012 UL http://www.cmaj.ca/content/184/10/1176.1.abstract