Pattama Polyong, C., Kakasikan, C., Jongjit, P., Wongpen, T., Ponpratom, Y. and Pondongnok, P. 2020. Mixed method research: The rice famers’s behavior of chemical pesticide using influence of acute symptom among farmers in Phachi District, Phra Nakhon Si Ayutthaya Province. UBRU Journal for Public Health Research. 9, 1 (Jun. 2020), 104–115.