This is the ValueSet that contains all the codes in KLKildeTilOplysningFFB (http://fhir.kl.dk/term/ValueSet/KLMatterOfInterestInformerFFB) and KLKildeTilOplysningFFB (http://fhir.kl.dk/term/ValueSet/KLMatterOfInterestInformerFFB). E.g. what you have to deal with if you get resources containing codes in either of them