Parallelisms of medical greatness.
D049672:History, 19th Century; D049673:History, 20th Century; D009316:National Institutes of Health (U.S.) / Q000266:history*; D009317:National Library of Medicine (U.S.) / Q000266:history*; D009462:Neurology / Q000266:history*; D009825:Oklahoma; D014481:United States