RT Journal Article SR Electronic T1 Engaging physicians and patients in conversations about unnecessary tests and procedures: Choosing Wisely Canada JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP cmaj.131674 DO 10.1503/cmaj.131674 A1 Wendy Levinson A1 Tai Huynh YR 2014 UL http://www.cmaj.ca/content/early/2014/02/18/cmaj.131674.abstract AB