_:vb50955493 . _:vb50955493 "A childhood leukemia that occurs during the neonatal period."^^ . _:vb50955493 . _:vb50955493 . _:vb50955493 "url:https://ncit.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI_Thesaurus&ns=ncit&code=C3845"^^ . _:vb50955493 .