title: Letter: Carbon monoxide, smoking, and constitution.
mesh_terms: D000328:Adult; D001161:Arteriosclerosis / Q000209:etiology; D001824:Body Constitution; D002248:Carbon Monoxide / Q000097:blood*; D006454:Hemoglobins / Q000032:analysis; D006801:Humans; D008297:Male; D008875:Middle Aged; D012907:Smoking / Q000150:complications*
chemical_list: D006454:Hemoglobins; D002248:Carbon Monoxide