Saranyapat, N., M. Somrarnyart, K. Chittawatanarat, and C. Yothayai. “Effects of the Deep Vein Thrombosis Prevention Program on Venous Blood Flow Velocity and Deep Vein Thrombosis Ratio Among Critically Ill Surgical Patients”. Nursing Journal CMU, vol. 52, no. 1, Mar. 2025, pp. 131-46, https://he02.tci-thaijo.org/index.php/cmunursing/article/view/268574.