Naz, Arshi, Mirza Shahzad Baig, Vijai Kumar, Samita Khan, and Sidra Javed. “Addition of Low Dose Ketamine to Tramadol for Prevention of Post–anesthetic Shivering: A Comparative Study”. Anaesthesia, Pain & Intensive Care 25, no. 5 (September 30, 2021): 596–601. Accessed April 3, 2025. https://apicareonline.com/index.php/APIC/article/view/1626.