RT Journal Article SR Electronic T1 Has the time come to phase out codeine? JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association DO 10.1503/cmaj.101411 A1 Noni MacDonald A1 Stuart M. MacLeod YR 2010 UL http://www.cmaj.ca/content/early/2010/10/04/cmaj.101411.abstract AB