Department of Oncological Radiotherapy;
First Hospital of Xi’an Jiaotong University;
Xi’an 710061;
Shaanxi Province;
China;
Deparunent of Gastroenterology;
Second Hospital of Xi’an Jiaotong University;
Xi’an 710004;
Shaanxi Province;
China;
Department of Pathophysiology;
Lund University;
Sweden;
Oncology Center;
Xijing Hospital;
Fourth Militry Medical University;
Xi’an 710032;
Shaanxi Province;
China;