Kozlovska, Iryna, Yurii Kozlovskiy, Inna Timokhina, and Natalia Zakharchuk. “The Effectiveness of Using Self-Made Hyperbaric Solution of Bupivacaine for Unilateral Spinal Anesthesia ”. Pain medicine 5, no. 2 (June 30, 2020): 63-67. Accessed October 25, 2020. https://www.painmedicine.org.ua/index.php/pnmdcn/article/view/224.