RT Journal Article SR Electronic T1 Busting myths about guidelines JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1301 OP E1302 DO 10.1503/cmaj.109-4051 VO 183 IS 18 A1 Roger Collier YR 2011 UL http://www.cmaj.ca/content/183/18/E1301.abstract