แซ่ลิ่ม สุมาภรณ์. “Classification of Countries in Asia Based on Health Determinants”. Region 11 Medical Journal 32, no. 4 (December 3, 2018): 1297–1314. accessed September 19, 2026. https://he02.tci-thaijo.org/index.php/Reg11MedJ/article/view/176421.