TY - JOUR T1 - Physicians disagree on legal age for cannabis JF - Canadian Medical Association Journal JO - CMAJ SP - E174 LP - E175 DO - 10.1503/cmaj.1095378 VL - 189 IS - 4 AU - Jay Rankin Y1 - 2017/01/30 UR - http://www.cmaj.ca/content/189/4/E174.abstract ER -