Wahid, F., Hussain, A. and Rehman, F. (2019) “Comparison of Tramadol and Pethidine for the treatment of shivering during spinal anesthesia”, Journal of Rawalpindi Medical College, 23(3), pp. 148-152. Available at: https://journalrmc.com/index.php/JRMC/article/view/1202 (Accessed: 17October2021).