1 Hemathology Unit/Coagulative Disorders, "Santa Maria Alle Scotte" University Teaching Hospital of Siena, University of Siena, Siena, Italy. luca.puccetti@unisi.it.
2 Hemathology Unit/Coagulative Disorders, "Santa Maria Alle Scotte" University Teaching Hospital of Siena, University of Siena, Siena, Italy.
3 Coagulative Disorders Laboratory Unit, Santa Maria Alle Scotte University Teaching Hospital of Siena, Siena, Italy.