{
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    "__licence": {
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      "link": "https://creativecommons.org/licenses/by/4.0",
      "name": "Creative Commons Attribution 4.0 International"
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    "results": {
      "Date": "2026-06-23 07:57:58",
      "DisorderGroup": "Disorder",
      "ORPHAcode": 636,
      "OrphanetURL": "http://www.orpha.net/consor/cgi-bin/OC_Exp.php?lng=en&Expert=636",
      "Preferred term": "Neurofibromatosis type 1",
      "Prevalence": [
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          "PrevalenceClass": "1-5 / 10 000",
          "PrevalenceGeographic": "United Kingdom",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Point prevalence",
          "PrevalenceValidationStatus": "Validated",
          "Source": "20082463[PMID]_2511318[PMID]",
          "ValMoy": "21.0"
        },
        {
          "PrevalenceClass": "1-5 / 10 000",
          "PrevalenceGeographic": "Finland",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Point prevalence",
          "PrevalenceValidationStatus": "Validated",
          "Source": "29215653[PMID]",
          "ValMoy": "24.46"
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        {
          "PrevalenceClass": "1-5 / 10 000",
          "PrevalenceGeographic": "New Zealand",
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          "PrevalenceType": "Point prevalence",
          "PrevalenceValidationStatus": "Validated",
          "Source": "2518509[PMID]",
          "ValMoy": "47.5"
        },
        {
          "PrevalenceClass": "1-5 / 10 000",
          "PrevalenceGeographic": "Europe",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Point prevalence",
          "PrevalenceValidationStatus": "Validated",
          "Source": "10991696[PMID]_20082463[PMID]_2511318[PMID]_6807042[PMID]_ORPHANET",
          "ValMoy": "21.3"
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          "PrevalenceGeographic": "United States",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "ISBN:039800370X[OTHER]_ORPHANET",
          "ValMoy": "36.65"
        },
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          "PrevalenceClass": "1-5 / 10 000",
          "PrevalenceGeographic": "United Kingdom",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
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          "ValMoy": "36.9"
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        {
          "PrevalenceClass": "1-5 / 10 000",
          "PrevalenceGeographic": "Worldwide",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "20301288[PMID]",
          "ValMoy": "33.3"
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        {
          "PrevalenceClass": "1-5 / 10 000",
          "PrevalenceGeographic": "Finland",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Prevalence at birth",
          "PrevalenceValidationStatus": "Validated",
          "Source": "25354145[PMID]",
          "ValMoy": "50.0"
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        {
          "PrevalenceClass": "1-9 / 100 000",
          "PrevalenceGeographic": "Canada",
          "PrevalenceQualification": "Value and class",
          "PrevalenceType": "Point prevalence",
          "PrevalenceValidationStatus": "Validated",
          "Source": "1685193[PMID]",
          "ValMoy": "6.7"
        },
        {
          "PrevalenceClass": "1-5 / 10 000",
          "PrevalenceGeographic": "Sweden",
          "PrevalenceQualification": "Value and class",
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          "PrevalenceValidationStatus": "Validated",
          "Source": "6807042[PMID]",
          "ValMoy": "20.0"
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      ],
      "Typology": "Disease"
    }
  },
  "datasetCategory": {
    "lang": "en",
    "name": "Epidemiology of rare diseases"
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  "parameters": {
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      "ORPHAcode": 636
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    "query": {}
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  "uri": "https://api.orphadata.com/rd-epidemiology/orphacodes/636"
}