PT - JOURNAL ARTICLE AU - Erin Walkinshaw TI - United States proposes universal labelling standards for prescriptions AID - 10.1503/cmaj.109-3908 DP - 2011 Jul 12 TA - Canadian Medical Association Journal PG - E635--E636 VI - 183 IP - 10 4099 - http://www.cmaj.ca/content/183/10/E635.short 4100 - http://www.cmaj.ca/content/183/10/E635.full SO - CMAJ2011 Jul 12; 183