1 Azienda Ospedaliero-Universitaria Policlinico of Modena, Modena, Italy.
2 Oncology Unit, University Hospital of Parma, Parma, Italy.
3 Department of Oncology and Hematology, Pathology Unit of the "F. Addarii" Institute of Oncology, University of Bologna, S. Orsola-Malpighi Hospital, Bologna, Italy.
4 Division of Oncology, Department of Oncology and Hematology, University of Bologna, S. Orsola-Malpighi Hospital, Bologna, Italy.
5 Pathology Unit, Azienda USL Valle d'Aosta, Aosta, Italy. [email protected].