human 165 Humans 151 Article 111 male 108 female 106 squamous cell carcinoma 104 adult 91 Carcinoma, Squamous Cell 82 middle aged 80 Male 78 Female 76 Middle Aged 71 aged 69 major clinical study 66 controlled study 63 pathology 61 Mouth Neoplasms 56 priority journal 56 mouth tumor 54 Aged 50 Head and Neck Neoplasms 46 retrospective study 46 head and neck tumor 45 Squamous Cell Carcinoma of Head and Neck 44 cancer staging 44 genetics 44 Adult 42 Retrospective Studies 37 mouth squamous cell carcinoma 36 human tissue 34