title: From irritable heart to mitral valve prolapse: World War I. The U.S. experience and the origin of neurocirculatory asthenia.
mesh_terms: D049673:History, 20th Century; D006801:Humans; D008887:Military Medicine / Q000266:history*; D008945:Mitral Valve Prolapse / Q000266:history*; D009449:Neurocirculatory Asthenia / Q000266:history*; D009626:Terminology as Topic; D014481:United States