Arshad, Maria, Liaqat Ali, Aaifa Khalid, Muhammad Nauman Ahmad, and Arshad Taqi. “A Randomized Controlled Trial to Compare the Efficacy of Pethidine and Tramadol for Postoperative Shivering”. Anaesthesia, Pain & Intensive Care 21, no. 4 (January 19, 2019): 427-431. Accessed July 3, 2024. https://apicareonline.com/index.php/APIC/article/view/87.