TY - RPRT TI - Sensitive and rapid high-performance liquid chromatographic method for the simultaneous determination of methotrexate and its metabolites in plasma, saliva and urine. AU - M L Chen AU - W L Chiou PY - 1981 DO - 10.1016/s0378-4347(00)84213-9 UR - https://pubmed.ncbi.nlm.nih.gov/7320138/ ID - 7320138 ER -