title: From the Einthoven galvanometer to the implantable loop recorder: revelations in store.
authors.forename: P E
authors.initials: PE
authors.lastname: Vardas
mesh_terms: D001145:Arrhythmias, Cardiac / Q000175:diagnosis; D004562:Electrocardiography / Q000266:history / Q000295:instrumentation; D015716:Electrocardiography, Ambulatory; D004567:Electrodes, Implanted; D049673:History, 20th Century; D006801:Humans; D019736:Prostheses and Implants