Khamhongsa, Vutpiwat. “RETRACTED ARTICLE: Model Development for Village Health Volunteers Performance in Na Nang Subdistrict, Phonphisai District, Nongkhai Province”. Journal of the Office of Disease Prevention and Control 9 Nakhon Ratchasima 31, no. 1 (April 2, 2025): 98–109. accessed September 28, 2026. https://he02.tci-thaijo.org/index.php/ODPC9/article/view/266983.