1 Institute for Histopathology and Molecular Diagnosis, Careggi University Hospital, Florence, Italy.
2 Department of Medicine (DIMED), Surgical Pathology & Cytopathology Unit, University and Hospital Trust of Padua, Padua, Italy.
3 Pathology Unit, University of Bologna, Policlinico St. Orsola-Malpighi Hospital, Bologna, Italy.
4 Department of Pathology and Diagnostics, University and Hospital Trust of Verona, P.le Stefani n. 1; 37126, Verona, Italy.
5 Department of Pathology and Diagnostics, University and Hospital Trust of Verona, P.le Stefani n. 1; 37126, Verona, Italy. albino.eccher@aovr.veneto.it.