PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Has a history of substance abuse or dependence within 12 months prior to enrolment (DSM-IV defined substance categories, excluding nicotine and caffeine and including alcohol), or has as a positive urine test for illicit drug use (excluding nicotine and caffeine).
http://www.w3.org/ns/prov#wasQuotedFrom
  • clinicaltrials.gov