History of cardiology: Mackenzie's ink polygraph.
Berry
Diana
D
D001145:Arrhythmias, Cardiac / Q000175:diagnosis / Q000266:history*; D002309:Cardiology / Q000266:history*; D003935:Diagnostic Techniques, Cardiovascular / Q000266:history* / Q000295:instrumentation; D049673:History, 20th Century; D006801:Humans; D012606:Scotland