1. Cancer Center; Taipei Veterans General Hospital & School of Medicine; National Yang Ming University; Taipei Taiwan
2. Division of Biostatistics and Bioinformatics; National Health Research Institute; Miaoli Taiwan
3. Division of Colorectal Surgery; China Medical University Hospital; Taichung Taiwan
4. Division of Colorectal Surgery; Chi Mei Hospital-Liuying; Tainan Taiwan
5. Division of Colorectal Surgery; Taipei Veterans General Hospital; Taipei Taiwan
6. Division of Colorectal Surgery; Changhua Christian Hospital; Changhua Taiwan
7. Division of Colorectal Surgery; Chang Gung Memorial Hospital; Kaoshiung Taiwan
8. Division of Radiation Oncology; China Medical University Hospital; Taichung Taiwan
9. Department of Pathology; China Medical University Hospital; Taichung Taiwan
10. Department of Research Planning and Development; National Health Research Institute; Miaoli Taiwan