title: The Einthoven string galvanometer and the interpretation of the T wave of the electrocardiogram [proceedings].
mesh_terms: D004562:Electrocardiography / Q000266:history*; D004594:Electrophysiology / Q000266:history* / Q000295:instrumentation; D049672:History, 19th Century; D049673:History, 20th Century; D009426:Netherlands