title: Response to: Foulds J and Ramstrom L letter regarding "Causal effects of smokeless tobacco on mortality in CPS-I and CPS-II".
authors.forename: S Jane
authors.initials: SJ
authors.lastname: Henley
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Thun
mesh_terms: D006801:Humans; D008171:Lung Diseases / Q000209:etiology / Q000401:mortality*; D008175:Lung Neoplasms / Q000209:etiology / Q000401:mortality; D009062:Mouth Neoplasms / Q000209:etiology / Q000401:mortality*; D014030:Tobacco, Smokeless / Q000009:adverse effects*