Gemelli Molise Hospital - Medical Physics Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS - Radiation Oncology Department, Catholic University of the Sacred Heart, Rome, Fondazione Policlinico Universitario A. Gemelli IRCCS - Radiation Oncology Department, Gemelli Molise Hospital - Radiation Oncology Unit, Gemelli Molise Hospital - Radiation Oncology Unit, Gemelli Molise Hospital - Medical Physics Unit, Università Vita-Salute San Raffaele - San Raffaele Hospital, University of Pisa, S Maria Hospital - Radiation Oncology Center, Sapienza University of Rome - Radiation Oncology Unit, Campus Bio-Medico University - Department of Radiation Oncology, Regione Emilia-Romagna - IRCCS Azienda Ospedaliero-Universitaria di Bologna, University Hospital Udine - Department of Radiation Oncology, Vito Fazzi Hospital - Radiotherapy Unit, Ospedale degli Infermi - Radiation Oncology Department, Azienda Ospedaliera Universitaria - Ospedali Riuniti di Ancona, University of Florence, Fondazione IRCCS Casa Sollievo della Sofferenza, Regione Emilia-Romagna - IRCCS Azienda Ospedaliero-Universitaria di Bologna, Fondazione Policlinico Universitario Agostino Gemelli IRCCS - Gynecologic Unit and Gemelli Molise Hospital - Radiation Oncology Unit