Article 4 female 4 human 4 overall response rate adult 3 controlled study 3 male 3 Female 2 Humans 2 Male 2 clinical article 2 health survey 2 middle aged 2 procedures 2 ATR protein 1 Adult 1 Antineoplastic Agents, Immunological 1 B7-H1 Antigen 1 Biomarkers, Tumor 1 CD274 protein, human 1 COVID-19 1 Disease Progression 1 Education, Distance 1 Gene Expression 1 Head and neck oncology 1 Immunotherapy 1 Latin square design 1 Medical decision-making 1 National survey 1 Nivolumab 1