About: http://webisa.webdatacommons.org/48968087

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	CRD summaryThe authors concluded that patient characteristics such as baseline severity and duration of erectile dysfunction can significantly affect the findings of efficacy trials of sildenafil.
http://www.w3.org/ns/prov#wasQuotedFrom	york.ac.uk