Maurizio Portaluri1, Niveen Abu-Rmeileh2, Emilio Gianicolo3. 1. Department of Radiotherapy, "A. Perrino" Hospital, Brindisi, Italy. Electronic address: brimapo@gmail.com. 2. Institute of Community and Public Health, Birzeit University, Birzeit, Occupied Palestinian Territory. 3. Institute of Clinical Physiology, National Research Council, Lecce, Italy; Institute of Medical Biostatistics, Epidemiology and Informatics, University of Mainz, Mainz, Germany.