Stepanova, N., Driianska, V., Korol, L., Snisar, L., & Savchenko, S. (2023). Pre-existing serum indoxyl sulfate and COVID-19 outcomes in patients undergoing hemodialysis: A retrospective cohort study. Ukrainian Journal of Nephrology and Dialysis, (2(78), 61-68. https://doi.org/10.31450/ukrjnd.2(78).2023.07