Romanenko, A., . I. Kuchyn, K. . Bielka, and I. Tokar. “Perioperative Pain Management in Elderly Patients With а Proximal Femoral Fracture: Evidence Review”. Pain Medicine, vol. 4, no. 4, Feb. 2020, pp. 42-49, doi:10.31636/pmjua.v4i4.2.