title: Smoking, Alzheimer's disease, and confounding with genes.
authors.forename: C J
authors.initials: CJ
authors.lastname: Smith
authors.forename: P M
authors.initials: PM
authors.lastname: Lippiello
authors.forename: J W
authors.initials: JW
authors.lastname: Ashford
mesh_terms: D000544:Alzheimer Disease / Q000235:genetics*; D004200:Diseases in Twins; D006801:Humans; D012907:Smoking / Q000235:genetics*; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic