1. Department of Gastroenterology; Cangzhou Central Hospital; Cangzhou 061001 China
2. Department of Pathophysiology; Hebei medical university; Shijiazhuang 050000 China
3. Cancer Center; West China Medical School; West China Hospital; Sichuan University; Chengdu 610041 China
4. Guangdong Zhongsheng Pharmaceutical Co., Ltd.; Guangdong 523325 China