About: http://webisa.webdatacommons.org/360713614

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	Patients were frequently compared with a control sample, either limited in number and matched to the patient group on several aspects or including all the population in a given geographical area (an island, a state).
http://www.w3.org/ns/prov#wasQuotedFrom	karger.com