Halushko, O. A., and L. M. Zenkina. “Characteristics of Anesthetic Management in Elderly Patients With Frailty Syndrome”. Zaporozhye Medical Journal 27, no. 2 (April 29, 2025): 157–165. Accessed May 2, 2025. https://zmj.zsmu.edu.ua/article/view/318211.