title: Insights into COPD comorbidities from the OLIN study and other large databases.
authors.forename: Douglas
authors.initials: D
authors.lastname: Mapel
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D029424:Pulmonary Disease, Chronic Obstructive / Q000453:epidemiology*; D012720:Severity of Illness Index