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 2026 Oct. 13];49(2):454-66. available from: https://he01.tci-thaijo.org/index.php/DCJ/article/view/255962