TY - JOUR T1 - Habit or addiction: the critical tension in deciding who should enforce hospital smoke-free policies JF - Canadian Medical Association Journal JO - CMAJ SP - 2085 LP - 2086 DO - 10.1503/cmaj.111579 VL - 183 IS - 18 AU - Sharon Lawn Y1 - 2011/12/13 UR - http://www.cmaj.ca/content/183/18/2085.abstract ER -