Rao, S. C. Z. A., Ehsan ul Haq, M., & Ali, L. (2010). EVALUATION OF THE ANALGESIC AND ADVERSE EFFECTS OF TRAMADOL IN COMBINATION WITH LOW DOSE BUPIVACAINE FOR PAINLESS EPIDURAL DELIVERY: Painless Epidural Delivery. Pakistan Armed Forces Medical Journal, 60(3), 415-9. https://pafmj.org/PAFMJ/article/view/1451