Terry Fox Cancer Research Laboratory;
China Medical University Hospital;
Graduate Institute of Basic Medical Science;
China Medical University;
Department of Medical Laboratory Science and Biotechnology;
Central Taiwan University of Science and Technology;
Graduate Institute of Clinical Medical Science;
China Medical University;
XRCC5; XRCC6; Polymorphism; Oral; cancer; Esophageal; cancer; Gastrointestinal; cancer; Colorectal; cancer;