【摘 要】
:
Background: Preoperative chemoradiotherapy (CRT) with 5-FU has been widely used to improve local control of disease and to preserve anal sphincter in the treatm
【机 构】
:
DepartmentofSurgery,DepartmentofSurgery,DepartmentofSurgery,DepartmentofSurgery,DepartmentofSurgery,