Impact of severe acute respiratory syndrome coronavirus-2 infection on the outcome of primary central nervous system lymphoma treatment: A study of the International PCNSL Collaborative Group. - Steffanoni S; Calimeri T; Laurenge A; Fox CP; Soussain C; Grommes C; Tisi MC; Boot J; Crosbie N; Visco C; Arcaini L; Chaganti S; et al. (British journal of haematology, 2022)