About: http://webisa.webdatacommons.org/340110038

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	For studies including subjects from different ethnic groups, H. pylori infection in cases and controls, anatomic location, and histologic type of gastric cancer, data were extracted separately.
http://www.w3.org/ns/prov#wasQuotedFrom	pubmedcentralcanada.ca