About: http://webisa.webdatacommons.org/204135729

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 VAS is a scale used to measure intensity of each symptom of the attack at baseline and at the pre-determined time points throughout treatment period.
http://www.w3.org/ns/prov#wasQuotedFrom	clinicaltrials.gov