An epidemiological approach to chronic obstructive pulmonary disease and alpha antitrypsin in hospital patients: a tri-racial study.
D044383:Black People; D001991:Bronchitis / Q000453:epidemiology; D002908:Chronic Disease; D003469:Culture; D005006:Ethnicity; D005260:Female; D006801:Humans; D005779:Immunodiffusion; D007198:Indians, North American; D008171:Lung Diseases / Q000453:epidemiology*; D008173:Lung Diseases, Obstructive / Q000453:epidemiology; D008297:Male; D009825:Oklahoma; D012907:Smoking / Q000453:epidemiology; D013147:Spirometry; D044465:White People; D001741:Black or African American