Nadir Nazir, Muhammad Ashraf Memon, Muhammad Arshed, Arshad Ahmed Khan Khanzada, Ali Asgher, Imran Ali 2021. Assessment of Post¬ anesthetic shivering by using Ketamine and Tramadol: A randomized controlled trial. Drugs and Cell Therapies in Hematology. 10, 1 (Dec. 2021), 4151–4156.