1. Department of Radiation Oncology, University Hospital Ferrara, Ferrara, Italy
2. Radiotherapy Division, “Santa Maria della Misericordia” Hospital Udine, Udine, Italy
3. Division of Abdominal Medical Oncology, National Cancer Institute, “Pascale” Naples, Naples, Italy
4. Department of Medical Oncology, University Hospital Ferrara, Ferrara, Italy
5. Scientific Directorate, National Cancer Institute (CRO), Aviano (PN), Italy
6. Division of Medical Oncology A, National Cancer Institute (CRO), Aviano (PN), Italy