RT Journal Article SR Electronic T1 The missing link in tobacco control JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 123 OP 124 DO 10.1503/cmaj.080855 VO 179 IS 2 A1 Jon O. Ebbert MD A1 J. Taylor Hays MD YR 2008 UL http://www.cmaj.ca/content/179/2/123.abstract