About: http://webisa.webdatacommons.org/427145077

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	One study was a cluster randomised controlled trial, one a prospective cohort study and two were before and after case series.
http://www.w3.org/ns/prov#wasQuotedFrom	york.ac.uk