[1] Alma Mater Studiorum Bologna Univ, Dept Med & Surg Sci DIMEC, Bologna, Italy
[2] IRCCS Azienda Osped Univ Bologna, Radiat Oncol, Bologna, Italy
[3] Univ Gondar, Tikur Anbessa Specialized Hosp, Coll Med & Hlth Sci, Dept Clin Oncol,Dept Radiotherapy, Addis Ababa, Ethiopia
[4] United Hosp Ltd, Dept Radiat Oncol, Dhaka, Bangladesh
[5] Azienda Osped Univ Osped Riuniti Ancona, Radiat Oncol, Ancona, Italy
[6] IRCCS Ist Romagnolo Studio Tumori IRST, Meldola, Italy
[7] Univ Cattolica Sacro Cuore, Gemelli Molise Hosp, Med Phys Unit, Campobasso, Italy
[8] IRCCS Azienda Osped Univ Bologna, Med Oncol Unit, Bologna, Italy