Affiliation: | 1. Division of Radiation Therapy, Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan;2. Faculty of Medicine, National Yang Ming University, Taipei, Taiwan;3. Department of Otolaryngology, Taipei Veterans General Hospital, Taipei, Taiwan;4. Division of Medical Oncology, Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan;5. Institute of Clinical Medicine, National Yang Ming University, Taipei, Taiwan |