About: http://webisa.webdatacommons.org/195796099

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	The study was an observational one utilizing data obtained from a cancer registry
http://www.w3.org/ns/prov#wasQuotedFrom	biomedcentral.com