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Comparative analysis of UPLC-MS/MS and chemiluminescence microparticle immunoassay for serum methotrexate measurement in pediatric intracranial tumor patients
Zhengyuan Shi, Jingfeng Li, Chunjing Yang, Xiqiao Xu, Dechun Jiang
Journal of Chinese Pharmaceutical Sciences . 2025, (5): 423 -431 .  DOI: 10.5246/jcps.2025.05.032