Received: 20 April 2021
Accepted: 1 June 2021
First Online: 12 June 2021
: The treatment of patients with the cited radiotherapy scheme has been approved by the local ethic committee. Register number IRB approved (Registry number 897/16), IRCCS Regina Elena National Cancer Institute in Rome. Patients signed an informed written consent.
: Not applicable.
: The are no competing interests to be declared.