This case-sensitive code system http://terminology.hl7.org/CodeSystem/whoARTfl defines codes, but no codes are represented here

<status value="retired"/> <experimental value="false"/> <date value="2021-11-09T10:00:00+10:00"/> <publisher value="TBD - External Body"/> <contact> <name value="World Health Organization"/> </contact> <description value="WHO Adverse Drug Reaction Terminology (WHOART). Uppsala (Sweden): WHO Collaborating Centre for International Drug Monitoring, 1997. This branch node OID contains identifiers for the different foreign language versions of this terminology. For more information, see http://www.umc-products.com/graphics/3149.pdf"/> <caseSensitive value="true"/> <content value="not-present"/> </CodeSystem>