Article 7 Head and Neck Neoplasms 7 Humans 7 head and neck tumor human 7 Female 6 Male 6 Middle Aged 6 adult 6 aged 6 female 6 male 6 middle aged 6 Aged 5 priority journal 5 Radiotherapy 4 Retrospective Studies 4 adverse event 4 cancer radiotherapy 4 head and neck cancer 4 intensity modulated radiation therapy 4 major clinical study 4 radiation dose 4 radiation injury 4 retrospective study 4 Adult 3 Dose-Response Relationship, Radiation 3 Radiation Injuries 3 bone necrosis 3 cancer patient 3