1. Department of Oncology and Hematology, Piacenza General Hospital, I‑29121 Piacenza, Italy
2. Department of Epidemiology, Piacenza General Hospital, I‑29121 Piacenza, Italy
3. Department of Radiology, Piacenza General Hospital, I‑29121 Piacenza, Italy
4. Department of Pathology, Piacenza General Hospital, I‑29121 Piacenza, Italy