Hossain , Nusrat. 2022. “Magnesium Sulfate Versus Tramadol Pretreatment in the Attenuation of Hemodynamic Responses and Post-Intubation Analgesia to Laryngoscopy & Endotracheal Intubation”. The Insight 4 (02). Dhaka, BD:81-88. https://bdjournals.org/index.php/insight/article/view/142.