Associations of rheumatoid arthritis, chronic lung diseases, and acute respiratory exacerbations among people who smoke in the prospective COPDGene study.
OBJECTIVE To investigate associations between rheumatoid arthritis (RA), chronic lung diseases, and acute respiratory exacerbations. METHODS Using the multicenter prospective COPDGene cohort of people who smoke (currently or previously), RA cases were identified using self-report and disease-modifying antirheumatic d...