Generated Narrative: NamingSystem v3-WC Summary Defining URL http://terminology.hl7.org/NamingSystem/v3-WC Version 2.1.0 Name WC Title WHO ATC Status active Definition WHO ATC Publisher WHO Identifiers Type Value Preferred OID 2.16.840.1.113883.6.73 true URI http://www.whocc.no/atc true