| Name | Info | Provider | Link |
|---|---|---|---|
| free resource | John Libbey Eurotext | http://www.jle.com/medline.md?issn=0003-3898&vol=70&iss=3&page=329 | |
| Pacemakers and Implantable Defibrillators | free resource | MedlinePlus Health Information | https://medlineplus.gov/pacemakersandimplantabledefibrillators.html |