Institution: | Zi-Kai Wang, Yun-Sheng Yang, Gang Sun, Li-Hua Peng, Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Chinese PLA Medical Academy, Beijing 100853, China;Ye Chen, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangdong Provincial Key Laboratory of Gastroenterology, Guangzhou 510515, Guangdong Province, China;Jing Yuan, Institute of Disease Control and Prevention, Academy of Military Medical Sciences, Beijing 100071, China |