Marked von Willebrand factor and factor VIII elevations in severe acute respiratory syndrome coronavirus-2-positive, but not severe acute respiratory syndrome coronavirus-2-negative, pneumonia: a case-control study - De Cristofaro, R; Liuzzo, G; Sacco, M; Lancellotti, S; Pedicino, D; Andreotti, F (Blood Coagul Fibrinolysis, 2021)