About: http://webisa.webdatacommons.org/4473428

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	Patients in these studies weren't allowed to take other drugs, such as aspirin, that might affect blood clotting.
http://www.w3.org/ns/prov#wasQuotedFrom	annals.org