ศิริยงค์ วิทวัส. “Risk factors associated with respiratory failure among hospitalized pneumonia patients in Kanchanadit Hospital, Suratthani”. Region 11 Medical Journal 33, no. 1 (March 1, 2019): 141–154. accessed September 20, 2026. https://he02.tci-thaijo.org/index.php/Reg11MedJ/article/view/188693.