Ratanasthien K. FOLIC ACID ANTAGONISTS (THE DIHYDROFOLATE REDUCTASE INHIBITORS): APPLICATION OF TETRAZOLIUM BIOAUTOGRAPHY ON DETERMINATION OF SERUM AND URINE METHOTREXATE. J Assoc Med Sci [Internet]. 2016 Jun. 29 [cited 2024 May 18];9(2):107. Available from: https://he01.tci-thaijo.org/index.php/bulletinAMS/article/view/60842