Kachacheewa, Woratanat, Thitima Wattanavijitkul, Siwadol Wongsak, and Theerawat Chalacheewa. “Morphine-Sparing Effect of Intermittent Versus Continuous Intravenous Infusion of Nefopam in Patients After Total Knee Arthroplasty: A Randomized Trial”. Research Medical Journal 47, no. 3 (September 27, 2024): 12–21. accessed September 19, 2026. https://he02.tci-thaijo.org/index.php/ramajournal/article/view/268540.