1. Division of Radiation Oncology, Department of Oncology National Taiwan University Hospital Taipei Taiwan
2. Graduate Institute of Clinical Medicine National Taiwan University Taipei Taiwan
3. National Taiwan University Cancer Center Taipei Taiwan
4. Department of Otorhinolaryngology, Head and Neck Surgery Linkou Chang Gung Memorial Hospital and Chang Gung University Taoyuan Taiwan
5. Cancer Research Center National Taiwan University College of Medicine Taipei Taiwan
6. Department of Radiology, College of Medicine National Taiwan University Taipei Taiwan
7. Department of Nuclear Medicine and Molecular Imaging Center Linkou Chang Gung Memorial Hospital and Chang Gung University Taoyuan Taiwan
8. Department of Radiation Oncology Chang Gung Memorial Hospital and Chang Gung University Taoyuan Taiwan