1. Pathology Unit, Department of Pathology and Diagnostics, University and Hospital Trust of Verona, Verona, Italy
2. Department of Pathology, Central Hospital of Bolzano, Bolzano, Italy
3. Department of Pathology, Cannizzaro Hospital, Catania, Italy
4. Institute of Histopathology and Molecular Diagnosis, Careggi Hospital, Florence, Italy