Einthoven, G.J. Burch, and the capillary electrometer.
D002318:Cardiovascular Diseases / Q000175:diagnosis; D004562:Electrocardiography / Q000266:history*; D004594:Electrophysiology / Q000266:history*; D004739:England; D005858:Germany; D006321:Heart / Q000502:physiology; D049672:History, 19th Century