TY - JOUR T1 - Ontario takes aim at painkiller abuse JF - Canadian Medical Association Journal JO - CMAJ SP - E141 LP - E142 DO - 10.1503/cmaj.109-3032 VL - 181 IS - 8 AU - Ann Silversides Y1 - 2009/10/13 UR - http://www.cmaj.ca/content/181/8/E141.abstract ER -