About: http://webisa.webdatacommons.org/345147505

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Atrial fibrillation, the most common cause of an irregular heartbeat, is a condition where the two upper chambers of the heart don???t contract normally.
http://www.w3.org/ns/prov#wasQuotedFrom	center4research.org