P. ThuvasethakulN. WaiwattanaMahidol University2018-06-012018-06-011979-01-01Journal of the Medical Association of Thailand. Vol.62, No.3 (1979), 108-115012522082-s2.0-0018428596https://repository.li.mahidol.ac.th/handle/20.500.14594/13270Mahidol UniversityMedicineArticleSCOPUS