title: Severe vs. mild COPD: a different disease?
authors.affiliation: Division of Pulmonary Disease, Salvatore Maugeri Foundation IRCCS, Scientific Institute of Veruno, Via Revislate 13, 1-28010 Veruno, NO, Italy. adistefano@fsm.it
authors.forename: A
authors.initials: A
authors.lastname: Di Stefano
authors.forename: C F
authors.initials: CF
authors.lastname: Donner
mesh_terms: D001706:Biopsy; D001980:Bronchi / Q000276:immunology / Q000473:pathology*; D006801:Humans; D008264:Macrophages / Q000276:immunology; D029424:Pulmonary Disease, Chronic Obstructive / Q000473:pathology*; D012720:Severity of Illness Index; D013601:T-Lymphocytes / Q000276:immunology