PT - JOURNAL ARTICLE AU - Milan Korcok TI - US adopts bar codes for drug products AID - 10.1503/cmaj.1040617 DP - 2004 May 25 TA - Canadian Medical Association Journal PG - 1657--1657 VI - 170 IP - 11 4099 - http://www.cmaj.ca/content/170/11/1657.short 4100 - http://www.cmaj.ca/content/170/11/1657.full SO - CMAJ2004 May 25; 170