Sombood, Pattharaporn, Kornnika Yankan, Ingpisa Sritanapongsa, Alisa Wanpetch, and Phongthara Vichitvejpaisal. “Impending Hypovolemia in Elderly Patients Under Anesthesia”. Thai Journal of Anesthesiology 49, no. 5 (August 22, 2023): 345–350. accessed September 20, 2026. https://he02.tci-thaijo.org/index.php/anesthai/article/view/264828.