“Evaluation of Anti-Shivering Mechanisms of Ketamine and Tramadol in Patients Undergoing Spinal Anesthesia”, Pjmcr, vol. 5, no. 1, pp. 402–408, Jan. 2026, Accessed: Sep. 12, 2026. [Online]. Available: https://pakjmcr.com/index.php/1/article/view/524