@prefix rdf: . @prefix : . @prefix owl: . @prefix oboInOwl: . @prefix xml: . @prefix protege: . @prefix xsd: . @prefix rdfs: . @prefix obo: . @prefix terms: . @prefix foaf: . @prefix dc: . dc:creator "Eric Joseph", "Josh Hanna", "Mathias Brochhausen", "William Hogan" ; terms:license "https://creativecommons.org/licenses/by/3.0/"@en ; a owl:Ontology ; rdfs:comment "An ontology of drugs.", "DrOn contains content developed by the National Library of Medicine in RxNorm. In creating DrOn, we have used RxNorm content only with SAB = RXNORM.", "This version of DrOn is current through the June, 2020 version of RxNorm.", "When citing DrOn, use the permanent URL of the ontology: http://purl.obolibrary.org/obo/dron.owl. When referencing a specific component of the DrOn, such as a class, object property, annotation property, or individual, use the Uniform Resource Identifier (URI) of that component."@en ; owl:imports , , , , , , ; owl:versionInfo "2020-06-01" .