About: http://webisa.webdatacommons.org/77257954

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	A questionnaire was distributed in 54 centres to a representative sample of 20- to 44-y-old men and women mainly in Europe but also including regions in North Africa, India, North America, Australia, and New Zealand.
http://www.w3.org/ns/prov#wasQuotedFrom	pubmedcentralcanada.ca