About: http://webisa.webdatacommons.org/186321986

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	participants such as gender, age, ethnicity, locality (urban/rural) were also retrieved
http://www.w3.org/ns/prov#wasQuotedFrom	biomedcentral.com