title: Causal effects of smokeless tobacco on mortality in CPS-I and CPS-II?
authors.forename: Jonathan
authors.initials: J
authors.lastname: Foulds
authors.forename: Lars
authors.initials: L
authors.lastname: Ramstrom
mesh_terms: D006801:Humans; D008171:Lung Diseases / Q000209:etiology / Q000401:mortality*; D008175:Lung Neoplasms / Q000209:etiology / Q000401:mortality; D008297:Male; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000209:etiology / Q000401:mortality*; D014030:Tobacco, Smokeless / Q000009:adverse effects*