Ovechkin, Aleksey M., A. Zh. Bayalieva, A. A. Ezhevskaya, A. A. Eremenko, D. V. Zabolotskij, I.B. Zabolotskikh, A. E. Karelov, V. A. Koryachkin, A. P. Spasova, V. E. Khoronenko, D. N. Uvarov, G. E. Ulrikh, and R. V. Shadrin. 2019. “Postoperative Analgesia. Guidelines”. Annals of Critical Care, no. 4 (November): 9-33. https://doi.org/10.21320/1818-474X-2019-4-9-33.