PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Vaccination campaigns were initiated between 28th September 2009 and 27th December 2009, while the first pandemic wave hit Europe in September-October 2009.Post marketing surveillance of vaccines and medicinal products is essential, in particular with regard to their use in pregnancy since pregnant women are excluded from clinical trials and much of the prior safety testing.
http://www.w3.org/ns/prov#wasQuotedFrom
  • pubmedcentralcanada.ca