Pongsawadan, Sirinart. “Effective of using guidelines for the discharge of chronic obstructive pulmonary disease patients in the male medical ward. Kanchanadit Hospital. Surat Thani Province”. Region 11 Medical Journal 39, no. 1 (March 14, 2025): 31–42. accessed September 19, 2026. https://he02.tci-thaijo.org/index.php/Reg11MedJ/article/view/271746.