Dutch physicians: Willem Einthoven, Christiaan Eijkman, Cornelis Rudolphus Theodorus Krayenhoff, Els Borst, Bernard Lievegoed, Toon Tellegen : Source: Wikipedia: Amazon.es: Libros
Forget Electrodes, the First EKG Machine Used Buckets of Saline Solution and Telephone Wire - IEEE Spectrum
Willem Einthoven - Engineering and Technology History Wiki
Einthoven (crater) - Wikiwand
The History of Electrocardiography | Thoracic Key
Einthoven - The Moon
File:Nobel prize of Willem Einthoven (5192222973).jpg - Wikimedia Commons
James Ong, MD, FACC, FHRS on LinkedIn: #epeeps #electrophysiology #electrocardiograph #ekg #ecg #cardiology…
RMMG - Revista Médica de Minas Gerais - Breve história da eletrocardiografia