Punpleng N, Sinthoppong K, Yeekian C. A study of expectations of occupational health and safety officers in business establishments in the Eastern Special Development Zone on the competencies of occupational medicine physicians. Dis Control J [Internet]. 2023 Jun. 29 [cited 2024 May 21];49(2):454-66. Available from: https://he01.tci-thaijo.org/index.php/DCJ/article/view/255962