1. Department of Radiation Oncology; Zuoying Branch of Kaohsiung Armed Forces General Hospital; Kaohsiung Taiwan
2. Management Office for Health Data; China Medical University Hospital; Taichung Taiwan
3. Institute of Public Health; College of Public Health; China Medical University; Taichung Taiwan
4. Department of Radiation Oncology; China Medical University Hospital; Taichung Taiwan
5. Graduate Institute of Clinical Medical Science and School of Medicine; College of Medicine; Taichung Taiwan
6. Department of Health Care and Social Work; Yu Da University; Miaoli Taiwan
7. Department of Nuclear Medicine and PET Center; China Medical University Hospital; Taichung Taiwan