About: http://webisa.webdatacommons.org/422721467

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	The PDE-5 drugs did introduce side-effects, such as headache and flushing, but these adverse reactions were not sufficiently severe to effect the men's perceived quality of life.
http://www.w3.org/ns/prov#wasQuotedFrom	sciencedaily.com