Ahmed, H. A. ., A. M. K. . Boujan, and O. I. . Abdulmajeed. “Fentanyl Versus Lidocaine Intravenously to Attenuate Hemodynamic Effects of En-Dotracheal Intubation ”. AMJ (Advanced Medical Journal) , vol. 5, no. 1, May 2023, pp. 36-41, doi:10.56056/amj.2019.77.