รัตนเดชสกุล นัชนพ. “Toothbrush With Saliva Suction Tube for Bedridden Patients”. Journal of Health Science of Thailand 31, no. 5 (October 25, 2022): 896–902. Accessed January 28, 2026. https://www.thaidj.org/index.php/JHS/article/view/12791.