Name Info Provider Link
Atrial Fibrillation free resource MedlinePlus Health Information https://medlineplus.gov/atrialfibrillation.html
subscription/membership/fee required Wiley https://onlinelibrary.wiley.com/resolve/openurl?genre=article&sid=nlm:pubmed&issn=0364-5134&date=1991&volume=30&issue=4&spage=511