title: Excess Mortality Due to Respiratory Causes in Patients With Rheumatoid Arthritis Should be Interpreted in the Context of "Never" or "Ever" Smoking and May be Due to Interstitial Lung Disease: Comment on the Article by Sparks et al.
authors.affiliation: University of Leeds, Leeds, UK.
authors.forename: Sarah
authors.identifier: 0000-0002-1558-7655
authors.initials: S
authors.lastname: Twigg
mesh_terms: D001172:Arthritis, Rheumatoid; D006801:Humans; D012217:Rheumatoid Factor; D012907:Smoking
chemical_list: D012217:Rheumatoid Factor