1. Division of Oncology, S Orsola-Malpighi Hospital, Bologna, Italy
2. Oncology Unit, Department of Experimental, Diagnostic & Specialty Medicine, Sant'Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
3. Department of Oncology, Macerata Hospital, Macerata, Italy
4. Pathology Service, Addarii Institute of Oncology, S-Orsola-Malpighi Hospital, Bologna, Italy
5. Section of Pathological Anatomy, Polytechnic University of the Marche Region, School of Medicine, United Hospitals, Ancona, Italy