Elsonbaty, M., Maher, M., Reda, A., Sarhan, K. (2021). 'Peri-Operative Pain Management for Cleft Lip Repair in Children, Bilateral Infraorbital Nerve Block Versus Combined Intravenous Fentanyl with Peri-Incisional Infiltration. A Randomized Comparative Study', The Egyptian Journal of Hospital Medicine, 82(1), pp. 25-31.