1. Department of Radiation Oncology; Tri-Service General Hospital; National Defense Medical Center; Taipei Taiwan
2. Institute of Clinical Medicine; National Yang-Ming University; Taipei Taiwan
3. Management Office for Health Data; China Medical University Hospital; Taichung Taiwan
4. College of Medicine; China Medical University; Taichung Taiwan
5. Department of Radiation Oncology; Chang Gung Memorial Hospital-Linkou; Chang Gung University; Taoyuan Taiwan
6. Graduate Institute of Clinical Medical Science; China Medical University College of Medicine; Taichung Taiwan
7. Department of Nuclear Medicine and PET Center; China Medical University Hospital; Taichung Taiwan