RT Journal Article SR Electronic T1 Scent-free policies generally unjustified JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E315 OP E316 DO 10.1503/cmaj.109-3800 VO 183 IS 6 A1 Emily Senger YR 2011 UL http://www.cmaj.ca/content/183/6/E315.abstract