Zaytsev, Andrey Yu., E. G. Usikyan, K. V. Dubrovin, V. A. Svetlov, M. A. Vyzhigina, and S. G. Zhukova. “Diagnosis of Difficult Airways: A Review”. Annals of Critical Care, no. 4 (October 30, 2023): 149–168. Accessed May 20, 2024. https://intensive-care.ru/index.php/acc/article/view/480.