1. Department of Gastroenterology, Digestive Disease Hospital, the First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, China
2. Jiangxi Clinical Research Center for Gastroenterology, Nanchang, Jiangxi Province, China
3. Department of Gastroenterology, The Second People’s Hospital of Jingdezhen, Jiangxi Province, China