About: http://webisa.webdatacommons.org/258476490

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	by a wide range of factors including age, gender, residence, educational level, knowledge
http://www.w3.org/ns/prov#wasQuotedFrom	biomedcentral.com