Letter: Smoking and disease.
D002263:Carboxyhemoglobin / Q000032:analysis*; D006454:Hemoglobins / Q000032:analysis*; D006801:Humans; D008171:Lung Diseases / Q000175:diagnosis* / Q000209:etiology; D008176:Lung Volume Measurements; D012907:Smoking; D013997:Time Factors
D006454:Hemoglobins; D002263:Carboxyhemoglobin