1. Department of Otolaryngology-Head and Neck Surgery; Kobe University Graduate School of Medicine; Chuo-Ku Kobe Hyogo Japan
2. Department of Radiation Oncology; Kobe University Graduate School of Medicine; Chuo-Ku Kobe Hyogo Japan
3. Department of Medical Oncology/Hematology; Kobe University Graduate School of Medicine; Chuo-Ku Kobe Hyogo Japan
4. Department of Plastic Surgery; Kobe University Graduate School of Medicine; Chuo-Ku Kobe Hyogo Japan
5. Department of Neurosurgery; Kobe University Graduate School of Medicine; Chuo-Ku Kobe Hyogo Japan