Snisar, L., RysyevА., I. Poperechnyi, V. Filonov, T. Ostapenko, V. Marchenko, and V. Dzhur. “Association Between Baseline Intact Parathyroid Hormone Levels, COVID-19 Severity, and Long-Term Outcomes in Patients Undergoing Hemodialysis: A Multicenter Retrospective Study”. Ukrainian Journal of Nephrology and Dialysis, no. 1(81), Dec. 2023, pp. 27-34, doi:10.31450/ukrjnd.1(81).2024.04.