title: Survey of professional manpower in pulmonary diseases.
mesh_terms: D006782:Hospitals, Special; D006784:Hospitals, Teaching; D006801:Humans; D008171:Lung Diseases; D008503:Medical Staff; D012106:Research; D012108:Research Personnel; D012109:Research Support as Topic; D013896:Thoracic Diseases / Q000628:therapy; D014481:United States