About: http://webisa.webdatacommons.org/320798748

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	confounding variables, including age at diagnosis, grade, tumor size, involvement
http://www.w3.org/ns/prov#wasQuotedFrom	breast-cancer-research.com