API:  http://id.who.int/icd/release/10/2019/J80-J84
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    "@id": "http://id.who.int/icd/release/10/2019/J80-J84",
    "parent": [
        "http://id.who.int/icd/release/10/2019/X"
    ],
    "child": [
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        "http://id.who.int/icd/release/10/2019/J81",
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    ],
    "browserUrl": "http://apps.who.int/classifications/icd10/browse/2019/en#/J80-J84",
    "code": "J80-J84",
    "title": {
        "@language": "en",
        "@value": "Other respiratory diseases principally affecting the interstitium"
    },
    "classKind": "block"
}