TY - JOUR T1 - United States proposes universal labelling standards for prescriptions JF - Canadian Medical Association Journal JO - CMAJ SP - E635 LP - E636 DO - 10.1503/cmaj.109-3908 VL - 183 IS - 10 AU - Erin Walkinshaw Y1 - 2011/07/12 UR - http://www.cmaj.ca/content/183/10/E635.abstract ER -