Current smoking predicts inadequate response to methotrexate monotherapy in rheumatoid arthritis patients naïve to DMARDs: Results from a retrospective cohort study. - Floris A; Perra D; Cangemi I; Congia M; Chessa E; Angioni MM; Mangoni AA; Erre GL; Mathieu A; Piga M; Cauli A (Medicine, 2021)