title: From irritable heart to mitral valve prolapse: World War I, the British experience and James Mackenzie.
mesh_terms: D049672:History, 19th Century; D049673:History, 20th Century; D006782:Hospitals, Special; D006801:Humans; D008887:Military Medicine; D008889:Military Personnel; D008945:Mitral Valve Prolapse; D006113:United Kingdom; D014857:Warfare