K. KhupulsupB. PetchclaiD. ChiewsilpMahidol University2018-10-122018-10-121981-01-01Journal of the Medical Association of Thailand. Vol.64, No.2 (1981), 72-75012522082-s2.0-0019395264https://repository.li.mahidol.ac.th/handle/20.500.14594/30248Mahidol UniversityMedicineComparison of hemagglutination inhibition test and radioimmunoassay for morphine in urineArticleSCOPUS