PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The following databases were searched, including PubMed, Embase, Web of science, Cochrane Library, CBM, VIP, Wanfang databases and CNKI, from creation of database to January 2013.
http://www.w3.org/ns/prov#wasQuotedFrom
  • researchgate.net