A view from the center.
D004501:Education, Medical; D049673:History, 20th Century; D006801:Humans; D008171:Lung Diseases / Q000266:history*; D009316:National Institutes of Health (U.S.); D012106:Research; D012140:Respiratory Tract Diseases / Q000266:history; D012955:Societies, Medical / Q000266:history* / Q000458:organization & administration; D014376:Tuberculosis / Q000266:history; D014481:United States