@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix isothes: <http://purl.org/iso25964/skos-thes#> .

<https://concepts.sagepub.com/social-science/concept/systemic_diseases>
  skos:prefLabel "systemic diseases"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/porphyria> .

<https://concepts.sagepub.com/social-science/concept/conceptgroup/concepts>
  a skos:Collection, isothes:ConceptGroup ;
  skos:prefLabel "concepts"@en ;
  skos:member <https://concepts.sagepub.com/social-science/concept/porphyria> .

<https://concepts.sagepub.com/social-science/concept/porphyria>
  skos:definition "Porphyrias are a group of diseases associated with enzyme deficiencies associated with the production of heme. These diseases may be due to inborn errors of metabolism, environmental toxins of infectious agents. [Source: <a href=\"https://sk.sagepub.com/reference/globalhealth/n991.xml\" target=\"_blank\" data-id=\"to-sk\">Encyclopedia of Global Health; Porphyria</a>]"@en ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/systemic_diseases> ;
  skos:prefLabel "porphyria"@en ;
  a skos:Concept .