RT Journal Article SR Electronic T1 International legal barriers to Canada’s marijuana plans JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP E215 OP E216 DO 10.1503/cmaj.160369 VO 188 IS 10 A1 Steven J. Hoffman A1 Roojin Habibi YR 2016 UL http://www.cmaj.ca/content/188/10/E215.abstract