Lіsniy I. I., Kh. A. Zakalska, and K. Yu. Bielka. 2016. “Assessment of Effectiveness of Epidural Anesthesia and Analgesia With Dexmedetomidine in Colorectal Surgery in Patients With Cancer”. Pain Medicine 1 (1). https://painmedicine.org.ua/index.php/pnmdcn/article/view/7.