Meher, S. ., S. . Siddique, P. K. . Datta, and S. J. Chowdhury. “Epidural Versus Opioid Analgesia for Pain Relief In Labour : A Comperative Study”. Journal of Chittagong Medical College Teachers' Association, vol. 28, no. 2, Feb. 2018, pp. 21-26, doi:10.3329/jcmcta.v28i2.62406.