Global quality of life for all patients (n=30) at all time points: t0 (prior to radiotherapy), t1 (subsequent to radiotherapy), t2 (after 3 months), t3 (after 6 months) and t4 (after 12 months), as measured by the European Organization for Research and Treatment of Cancer QLQ-C30 questionnaire, in which a higher score equated to an improved global quality of life.