RT Journal Article SR Electronic T1 A positive prognosis JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1206 OP 1206 DO 10.1503/cmaj.1050141 VO 173 IS 10 A1 Anthony Brade A1 Brian O'Sullivan A1 Bernard Cummings A1 Ian Quirt YR 2005 UL http://www.cmaj.ca/content/173/10/1206.1.abstract