1. Section of Pathological Anatomy, Polytechnic University of the Marche Region, School of Medicine, United Hospitals, Ancona, Italy
2. Department of Specialist Clinical & Odontostomatological Sciences, Università Politecnica delle Marche, Ancona, Italy
3. Division of Oncology, S Orsola-Malpighi Hospital, Bologna, Italy
4. Department of Pathology & Laboratory Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
5. Department of Surgery & Pathology, Faculty of Medicine, Cordoba University Medical School, Cordoba, Spain
6. Champalimaud Clinical Center, Lisbon, Portugal