About: http://webisa.webdatacommons.org/409453453

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 control group could receive placebo, other types of opioid or active controls.
http://www.w3.org/ns/prov#wasQuotedFrom	york.ac.uk