Assessing The Severity of Oropharyngeal Dysphagia and its Relation to Quality of Life Status in Head and Neck Cancer Patients After Undergoing Chemoradiotherapy in DR Sardjito Public Hospital, Yogyakarta, Indonesia: A Cross Sectional Prospective Study - Anisa Haqul Khoiria; Agus Surono; Camelia Herdini (Advances In Social Humanities Research, 2026)