Beijing Univ;
Dept Surg Gastroenterol;
Surg Oncol Lab;
Peoples Hosp;
Beijing 100044;
Peoples R China;
Chinese Peoples Liberat Army Hosp;
Dept Pathol;
Beijing 100036;
Peoples R China;
Beijing Univ;
Peoples Hosp;
Dept Pathol;
Beijing 100044;
Peoples R China;
Colorectal Neoplasms; Enhancer of zeste homologue 2; STAT6; Immunohistochemistry;