title: Clinical features of polycythaemic patients with chronic obstructive non-specific lung disease.
mesh_terms: D001784:Blood Gas Analysis; D001991:Bronchitis / Q000150:complications / Q000175:diagnosis; D002908:Chronic Disease; D003937:Diagnosis, Differential; D005260:Female; D006400:Hematocrit; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000150:complications*; D008297:Male; D008875:Middle Aged; D011086:Polycythemia / Q000150:complications*; D011656:Pulmonary Emphysema / Q000175:diagnosis; D013147:Spirometry