RT Journal Article SR Electronic T1 Advocacy groups continue to scorn screening guidelines JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E295 OP E296 DO 10.1503/cmaj.109-4147 VO 184 IS 6 A1 Lauren Vogel YR 2012 UL http://www.cmaj.ca/content/184/6/E295.abstract