TY - JOUR T1 - Cigarette ads return to Canadian magazines JF - Canadian Medical Association Journal JO - CMAJ SP - 384 LP - 385 DO - 10.1503/cmaj.080046 VL - 178 IS - 4 AU - Roger Collier Y1 - 2008/02/12 UR - http://www.cmaj.ca/content/178/4/384.2.abstract ER -