title: Development of secondary polycythaemia in chronic airways obstruction.
mesh_terms: D000531:Altitude; D002940:Circadian Rhythm; D004911:Erythrocyte Volume; D004921:Erythropoietin / Q000378:metabolism; D006400:Hematocrit; D006454:Hemoglobins / Q000032:analysis; D006801:Humans; D000860:Hypoxia / Q000097:blood / Q000209:etiology; D008173:Lung Diseases, Obstructive / Q000150:complications*; D011086:Polycythemia / Q000209:etiology*; D012907:Smoking; D013739:Testosterone / Q000097:blood
chemical_list: D006454:Hemoglobins; D004921:Erythropoietin; D013739:Testosterone