About: http://webisa.webdatacommons.org/275879236

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	Randomised controlled trials (RCTs), case-control studies and cohort studies were eligible.All studies were conducted in the USA, except for two in Canada and two in Denmark.
http://www.w3.org/ns/prov#wasQuotedFrom	york.ac.uk