1 Departments of Pathology and Surgery, University of Modena and Reggio-Emilia, Policlinico Hospital, largo del Pozzo 71, I-41100 Modena, Italy.
2 Departments of Pathology and Surgery, University of Modena and Reggio-Emilia, Policlinico Hospital, largo del Pozzo 71, I-41100 Modena, Italy. Electronic address: antonio.manenti@unimore.it.