title: Response.
authors.affiliation: Nicotine Dependence Center, Mayo Clinic, Rochester, MN. Electronic address: rhurt@mayo.edu.
authors.forename: Richard D
authors.initials: RD
authors.lastname: Hurt
authors.affiliation: Division of Cardiovascular Diseases, Mayo Clinic, Rochester, MN.
authors.forename: Joseph G
authors.initials: JG
authors.lastname: Murphy
authors.affiliation: Division of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN.
authors.forename: William F
authors.initials: WF
authors.lastname: Dunn
mesh_terms: D005260:Female; D006801:Humans; D012907:Smoking / Q000453:epidemiology* / Q000266:history*; D016540:Smoking Cessation / Q000266:history* / Q000706:statistics & numerical data*