Sapate, M., Sahu, P., Thatte, W. S., & Dubey, R. (2019). A randomized, double blind, control study of the effects of adding nalbuphine to spinal bupivacaine for lower abdominal surgeries in elderly patients. Anaesthesia, Pain & Intensive Care, 145-148. Retrieved from https://apicareonline.com/index.php/APIC/article/view/457