RT Journal Article SR Electronic T1 Tar Wars and Smoking Prevention: Premature Claim of Effectiveness JF The Journal of the American Board of Family Medicine JO J Am Board Fam Med FD American Board of Family Medicine SP 80 OP 80 DO 10.3122/jabfm.2008.01.070189 VO 21 IS 1 A1 Johnson, Tonya A1 Blum, Alan YR 2008 UL http://www.jabfm.org/content/21/1/80.abstract AB