human 95 Article 76 Humans 76 female 63 adult 59 male 57 cancer radiotherapy 55 Radiotherapy 53 Female 42 middle aged 42 aged 39 major clinical study 37 radiotherapy 37 controlled study 35 Male 34 Middle Aged 31 priority journal 28 clinical article 27 antineoplastic agent 26 cancer surgery 26 follow up 26 procedures 26 Aged 24 cancer patient 24 cancer staging 23 retrospective study 23 Head and Neck Neoplasms 22 chemoradiotherapy 21 head and neck tumor 21 cancer chemotherapy 20