1. Section of Anatomic Pathology and Histology, Department of Medicine and Surgery, University of Perugia, Perugia, Italy.
2. Breast Unit, Department of Medicine and Surgery, University of Perugia, Perugia, Italy.
3. Section of Public Health, Department of Medicine and Surgery, University of Perugia, Perugia, Italy.
4. Thoracic Surgery Unit, Department of Medicine and Surgery, University of Perugia, Perugia, Italy.
5. Section of General and Emergency Surgery, Department of Medicine and Surgery, University of Perugia, Perugia, Italy.
6. General Surgery Unit, S.M. Misericordia Hospital, Perugia, Italy.