RT Journal Article SR Electronic T1 Pharmaceutical advertising JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1066 OP 1066-a DO 10.1503/cmaj.1050137 VO 173 IS 9 A1 Shelby Haque YR 2005 UL http://www.cmaj.ca/content/173/9/1066.2.abstract