กาญจนพงศ์ ส. “Evaluation of Medical Services for Diabetes Mellitus Patients at Outpatient Department, Hospitals in the Area of Health 11”. Region 11 Medical Journal, vol. 31, no. 3, Feb. 2019, pp. 465-82, https://he02.tci-thaijo.org/index.php/Reg11MedJ/article/view/170854.