Sittichok, Wuttichai, and Kaysorn Sumpowthong. “Relationship Between Selected Factors and Operation of Local Health Insurance Fund Board, Angthong Province”. Journal of Health Science of Thailand 26, no. Supplement 2 (November 1, 2017): S247-S254. Accessed January 28, 2026. https://thaidj.org/index.php/JHS/article/view/198.