Shikder, M. K. U., A. Jahan, and S. Pal. “Efficacy and Safety of Intrathecal Morphine For Post Cesarean Analgesia Under Spinal Anesthesia”. Medico Research Chronicles, Vol. 10, no. 4, July 2023, pp. 242-7, doi:10.26838/MEDRECH.2023.10.4.703.