1. Oncology Unit, Macerata Hospital, Macerata, Italy
2. Division of Oncology, S. Orsola-Malpighi Hospital, Bologna, Italy
3. Department of Specialistic Clinical and Odontostomatological Sciences, Polytechnic University of Marche, Ancona, Italy
4. Oncology Unit, City Hospital, Faenza, Italy
5. Section of Pathological Anatomy, Polytechnic University of the Marche Region, School of Medicine, United Hospitals, Ancona, Italy
6. Dipartimento oncologico uslsudest toscana- area senese, Poggibonsi, Italy