<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>A retired unique concept identifier created and stored as Concept Name by legacy EVS software. Use of these values was long discouraged, but continued as late as 2009 when creation of new values ceased and Concept Name was retired. Legacy values are intended solely to help resolve and update earlier coding.</n0:def-definition><n0:def-source>NCI</n0:def-source></n0:ComplexDefinition>