"childhood ependymoma"@en . _:vb50954008 . "childhood ependymoma"^^ . "NCI:C8578"^^ . . "DOID:5509"^^ . _:vb50954008 . . . "disease_ontology"^^ . . _:vb50954008 . . _:vb50954008 . _:vb50954008 .