1. Regional Health Authority of Umbria; Health Planning Service; Perugia Italy 06124
2. University of Perugia and Perugia General Hospital; Radiation Oncology Section, Department of Surgical and Biomedical Science; Perugia Italy
3. Perugia General Hospital; Radiation Oncology Section; Perugia Italy
4. University of Perugia; Department of General Surgery; Terni Italy
5. Local Health Unit of Perugia; General Medicine; Azienda Sanitaria Locale USL 1, Medicina Generale Perugia Italy
6. Fondazione Policlinico Universitario A.Gemelli IRCCS; Radiation Oncology Department; Rome Italy