Methotrexate-associated toxicity in children with Down syndrome and acute lymphoblastic leukemia during consolidation therapy with high dose methotrexate according to ALL-BFM treatment regimen

在接受ALL-BFM治疗方案高剂量甲氨蝶呤巩固治疗期间，唐氏综合征合并急性淋巴细胞白血病患儿出现甲氨蝶呤相关毒性