1. Division of Oncology, S Orsola-Malpighi Hospital, Bologna, Italy
2. Section of Pathological Anatomy, Polytechnic University of the Marche Region, School of Medicine, United Hospitals, Ancona, Italy
3. Oncology Unit, Macerata Hospital, Macerata, Italy
4. Pathology Department, S Orsola-Malpighi Hospital, Bologna, Italy
5. Department of Medical Oncology, Azienda Ospedaliera Universitaria Integrata (AOUI), Verona, Italy
6. Department of Pathology & Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
7. Department of Surgery, Cordoba University Medical School, Cordoba, Spain