“…Three studies obtained qualitative data through interviews (31,(33)(34)(35), four with focus-groups (32,36,38,39), and one study is a first-hand account (37). Sixty-one participants in four studies had gone through the PBT process, either as a patient (n=24; (34,35,36)) or parent of a patient aged under 18 (n=37; (31,33)), and 123 participants across four studies were patients and caregivers considering PBT as an alternative to traditional radiotherapy (32,36,38,39) (Table 3). Five studies were UK based (31-33, 36, 38), one was based in Sweden (34,35) and two in the US (37,39).…”