title: John S. Chapman, MD: neglected pioneer in sarcoidosis.
authors: Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Georgetown University Medical Center, Washington, DC 20007, USA. yeagerh@georgetown.edu
authors: H
authors: H
authors: Yeager
authors: S
authors: S
authors: Gopalan
mesh_terms: D000486:Allergy and Immunology / Q000266:history*; D035843:Biomedical Research / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D009165:Mycobacterium Infections, Nontuberculous / Q000266:history; D012507:Sarcoidosis / Q000266:history*; D014481:United States