Salama, A. A., Ibrahim, T. and Karam, S. (2018) “A comparative study between tramadol and fentanyl in spinal anesthesia in cesarean section”, Tishreen University Journal -Medical Sciences Series, 39(3). Available at: https://journal.tishreen.edu.sy/index.php/hlthscnc/article/view/3876 (Accessed: 19May2024).