title: A softer view of hardening.
authors.forename: John R
authors.initials: JR
authors.lastname: Hughes
authors.forename: Thomas H
authors.initials: TH
authors.lastname: Brandon
mesh_terms: D006801:Humans; D009042:Motivation; D011640:Public Policy; D012907:Smoking / Q000453:epidemiology / Q000523:psychology*; D016540:Smoking Cessation; D014029:Tobacco Use Disorder