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	subscription/membership/fee required	Ingenta plc	https://www.ingentaconnect.com/openurl?genre=article&issn=1942-325X&volume=10&issue=6&spage=&aulast=Ravvaz
Atrial Fibrillation	free resource	MedlinePlus Health Information	https://medlineplus.gov/atrialfibrillation.html
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	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/29237680/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/29237680
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