Erratum to: Hematological disorders following kidney transplantation. Issue 7 (25th December 2020) - Malyszko, Jolanta; Basak, Grzegorz; Batko, Krzysztof; Capasso, Giavambatista; Capasso, Anna; Drozd-Sokolowska, Joanna; Krzanowska, Katarzyna; Kulicki, Pawel; Matuszkiewicz-Rowinska, Joanna; Soler, Maria Jose; Sprangers, Ben; Malyszko, Jacek