A. Moallemi, F. Fekrat, H. Jarineshin, M. Ojand, H. Shuruei, and A. 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”, EMJ, vol. 63, no. 1, Jan. 2025.