1. Radiation Oncology Department, Tomotherapy Unit, Ospedale Regionale “U. Parini”, AUSL Valle d'Aosta, Aosta
2. Medical Physics Department, Ospedale Regionale “U. Parini”, AUSL Valle d'Aosta, Aosta
3. Radiotherapy Department, ASL TO4, Ospedale Civile di Ivrea, Ivrea, Italy
4. Medical Physics Department, ASL TO4, Ospedale Civile di Ivrea, Ivrea, Italy
5. Medical Oncology Department, Ospedale Regionale “U. Parini”, AUSL Valle d'Aosta, Aosta
6. Diagnostic and Interventional Radiology Department, Ospedale Regionale “U. Parini”, AUSL Valle d'Aosta, Aosta
7. Department of Medical and Surgical Sciences, Radiation Oncology Unit, University of Turin, Ospedale San Giovanni Battista, Turin, Italy