Moallemi, Abbas, Fereydoon Fekrat, Hashem Jarineshin, Mostafa Ojand, Hadi Shuruei, and Alireza Abdollahzadeh Baghaei. “A Comparative Study of the Effects of Adding Intrathecal Morphine and Pethidine to Bupivacaine in Spinal Anesthesia During Cesarean Section: A Randomized Clinical Trial”. Ethiopian Medical Journal 63, no. 1 (January 1, 2025). Accessed June 14, 2025. https://emjema.org/index.php/EMJ/article/view/2538.