Agarwal, K, M Sharma, N Agarwal, VK Agrawal, and A Agarwal. 2013. “Comparative Study of Single Dose Epidural Morphine and Intermittent Dose Morphine With Bupivacaine in Post Cesarean Analgesia”. Nepal Journal of Obstetrics and Gynaecology 7 (1):41-44. https://nepjol.info./index.php/NJOG/article/view/8835.