Kumar, Arun. “Comparison of Pre-Emptive Usage of Ketamine and Combination of Ketamine With Midazolam to Prevent Shivering During Neuraxial Block”. Journal of Surgery Pakistan 25, no. 4 (February 12, 2021): 158-62. Accessed September 15, 2025. http://www.jsp.org.pk/index.php/jsp/article/view/232.