Affiliation: | a Oncology Institute of Southern Switzerland, Bellinzona, Switzerland b Radio-Oncology Department, Gävle Hospital, Gävle, Sweden c Radio-Oncology Department, Istituti Ospitalieri Cremona, Cremona, Italy d Radiation Oncology Department, Geneva University Hospital, Geneva, Switzerland e Radio-Oncology Department, Istituto Clinico Humanitas, IRCSS, Milan (Rozzano), Italy |