“Efficacy of Epidural Tramadol As Adjuvant to Bupivacaine to Reduce Post-Anesthesia Shivering: Comparison With Intravenous Tramadol HCl in Elective Caesarian Section”. 2024. Medical Forum Monthly 31 (10). http://medicalforummonthly.com/index.php/mfm/article/view/2501.