Amjad, Ahsan, Usman Khalid, Adil Ashraf, Sumayya Tariq, Akrama Ehsan, Syed Imtiaz Ali Zaidi, and Muhammad Hussain. “Evaluating The Effectiveness of Nefopam Versus Tramadol in Treating Established Post-Spinal Anesthesia Shivering: A Systematic Review”. Pakistan Journal of Medicine and Dentistry 14, no. 2 (April 13, 2025): 486–495. Accessed June 22, 2026. https://ojs.zu.edu.pk/pjmd/article/view/3419.