Abdul Waheed, Shahneela Raza, Muhammad Saleh, Hamza Ashraf Zia, Babar Jan, Hafiz Muhammad Umair. The Effect of Ketamine Versus Tramadol on Prophylactic Post-Spinal Shivering in Those Patients Undergoing Orthopedic Surgery. Pakistan Journal of Medical & Health Sciences [Internet]. 2023 Mar. 10 [cited 2024 Jul. 17];17(01):648. Available from: https://pjmhsonline.com/index.php/pjmhs/article/view/4111