1 The Second Clinical Medical College, Zhejiang Chinese Medical University.
2 The First Clinical Medical College, Zhejiang Chinese Medical University.
3 Department of Gastroenterology, The Second Affiliated Hospital of Zhejiang Chinese Medical University.
4 The Second Clinical Medical College, Zhejiang Chinese Medical University, Department of Gastroenterology, The Second Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China.