Wongworasun, S., J. Hunsrisakhun, A. . Watanapa, and D. . Wannapahool. “Effect of Oral Health Promoting Chatbot Program on Knowledge in Oral Health Care of the Elderly”. Khon Kaen University Dental Journal, vol. 26, no. 1, Feb. 2023, pp. 33-43, https://he01.tci-thaijo.org/index.php/KDJ/article/view/255571.