Department;
of;
Oncology;
Surgery,;
Affiliated;
Hospital;
of;
Hebei;
University,;
Baoding;
071000,;
China;
Department;
of;
Abdomen;
Surgery,;
Cancer;
Hospital,;
Peking;
Union;
Medical;
College;
and;
Chinese;
Academy;
of;
Medical;
Sciences,;
Beijing;
100021,;
China;
Department;
of;
Pathology,;
Cancer;
Hospital,;
Peking;
Union;
Medical;
College;
and;
Chinese;
Academy;
of;
Medical;
Sciences,;
Beijing;
100021,;
China;