About: http://webisa.webdatacommons.org/423583705

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 efficacy of these drugs is proven, especially for the unspecific proteinase inhibitor aprotinin, however, there are concerns about the safety and the high costs of this drug.
http://www.w3.org/ns/prov#wasQuotedFrom	clinicaltrials.gov