Affiliation: | 1. Department of Gastroenterology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China;2. Department of Gastroenterology, The Wenzhou Central Hospital, Wenzhou, China;3. Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China;4. Department of Gastroenterology, The Wenzhou Renmin Hospital, Wenzhou, China |