Chamaiporn Tawichasri. 1986. Neutralizing antibody titers to polioviruses comparison between completely vaccinated and unvaccinated children in Chiang Mai. Bangkok:Mahidol University;
Chamaiporn Tawichasri. (1986) Neutralizing antibody titers to polioviruses comparison between completely vaccinated and unvaccinated children in Chiang Mai (รายงานผลงานวิจัย). Mahidol University:Bangkok.
Chamaiporn Tawichasri. Neutralizing antibody titers to polioviruses comparison between completely vaccinated and unvaccinated children in Chiang Mai. Bangkok:Mahidol University, 1986.
Chamaiporn Tawichasri. (1986) Neutralizing antibody titers to polioviruses comparison between completely vaccinated and unvaccinated children in Chiang Mai (รายงานผลงานวิจัย). Mahidol University:Bangkok.