About: http://webisa.webdatacommons.org/401776445

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	They surveyed 1,000 individuals using a postal questionnaire that targeted symptoms such as dry eyes and dry mouth.
http://www.w3.org/ns/prov#wasQuotedFrom	clspectrum.com