1. Institute of Pathologic Anatomy and Histology, Division of Cancer Research, University of Perugia, School of Medicine, Perugia, Italy
2. Institute of Pathologic Anatomy and Histology, Division of Oral Pathology, University of Milan, School of Medicine, Milan, Italy
3. Medical Oncology Division, Policlinico Monteluce Hospital, Perugia, Italy
4. Breast Unit, Surgical Department, University of Perugia, School of Medicine, Perugia, Italy