RT Journal Article SR Electronic T1 Facts not enough to change minds about health myths JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E1430 OP E1430 DO 10.1503/cmaj.109-5526 VO 189 IS 46 A1 Collier, Roger YR 2017 UL http://www.cmaj.ca/content/189/46/E1430.abstract