{
  "package" : "hl7.fhir.r4.examples@4.0.1",
  "definition" : "The Holladay 2 IOL calculation formula",
  "system" : "http://dicom.nema.org/resources/ontology/DCM",
  "property" : [ ],
  "codesystem" : "5f336dd4-db81-5653-939a-25648922f08e",
  "concept_id" : "88f75977-94a7-530a-8b4c-b995e4f761e2",
  "ancestors" : {
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  "id" : "092223fb-3ca1-4715-8abb-3b60535e0b1f",
  "code" : "111763",
  "display" : "Holladay 2",
  "version" : "01"
}