RT Journal Article SR Electronic T1 US becoming more accepting of medical marijuana JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E745 OP E746 DO 10.1503/cmaj.109-4612 VO 185 IS 16 A1 Nancy Benac YR 2013 UL http://www.cmaj.ca/content/185/16/E745.abstract AB