title: Are COPD and lung cancer two manifestations of the same disease?
authors.forename: Thomas L
authors.initials: TL
authors.lastname: Petty
mesh_terms: D004781:Environmental Exposure; D006801:Humans; D007249:Inflammation; D008175:Lung Neoplasms / Q000145:classification* / Q000209:etiology; D029424:Pulmonary Disease, Chronic Obstructive / Q000145:classification* / Q000209:etiology; D012907:Smoking