Athasit VejjajivaPravit LerdverasirikulMahidol University2018-03-222018-03-221977-01-01British Medical Journal. Vol.2, No.6097 (1977), 1260000714472-s2.0-0017661247https://repository.li.mahidol.ac.th/handle/20.500.14594/10321Mahidol UniversityMedicineArticleSCOPUS10.1136/bmj.2.6097.1260