Waris, Irfan, and Imran Khan KD. “A Comparative Study of Plain and Hyperbaric Solution of Ropivacaine for Spinal Anaesthesia in Minor Gynaecological and Urological Surgeries”. Academia Anesthesiologica International 4, no. 2 (July 5, 2019): 44-47. Accessed November 12, 2019. http://aijournals.com/index.php/aan/article/view/770.