About: http://webisa.webdatacommons.org/418096424

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	system is a valid instrument for measuring the burden of morbidity in a population
http://www.w3.org/ns/prov#wasQuotedFrom	biomedcentral.com