proton therapy, head and neck cancer, acute toxicities
head and neck cancer, CTV margin, radiotherapy guidelines, local tumour control, local recurrence pattern
Radiotherapy clinical trials, Proton therapy, Clinical trial enrolment, Clinical trial barriers, Clinical trial decision-making, Decision-making interventions
Patient decision aidClinical trial participationPerson centred careShared decision-makingRadiotherapyFeasibility
