About: http://webisa.webdatacommons.org/398631190

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	specific for each centre, who was in charge of including or excluding patients.
http://www.w3.org/ns/prov#wasQuotedFrom	biomedcentral.com