Name Info Provider Link
Pacemakers and Implantable Defibrillators free resource MedlinePlus Health Information https://medlineplus.gov/pacemakersandimplantabledefibrillators.html
free resource Scientific Electronic Library Online https://www.scielo.br/scielo.php?script=sci_arttext&pid=S0066-782X2007000100002&lng=en&nrm=iso&tlng=en