Corresponding Author

Zhao Shen Li

Department of Gastroenterology, Changhai Hospital, Second Military Medical University/Naval Medical University, Shanghai, China

Correspondence

Zhao Shen LI, Department of Gastroenterology, Changhai Hospital, Second Military Medical University/Naval Medical University, No.168 Changhai Road, Shanghai 200433, China.

Email: zhsl@vip.163.com

En Qiang LINGHU, Department of Gastroenterology and Hepatology, The First Medical Center of Chinese PLA General Hospital, No.28 Fuxing Road, Beijing 100853, China.

Email: linghuenqiang@vip.sina.com