title: When does the risk of acute coronary heart disease in ex-smokers fail to that in non-smokers?
authors.forename: R
authors.initials: R
authors.lastname: Peto
mesh_terms: D003327:Coronary Disease / Q000209:etiology*; D006801:Humans; D012107:Research Design; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects*