Name Info Provider Link
Arrhythmia free resource MedlinePlus Health Information https://medlineplus.gov/arrhythmia.html
subscription/membership/fee required Wiley https://onlinelibrary.wiley.com/resolve/openurl?genre=article&sid=nlm:pubmed&issn=0147-8389&date=1993&volume=16&issue=9&spage=1853