1. Department of Gastroenterology; Sir Run Run Shaw Hospital; School of Medicine; Zhejiang University; Hangzhou China
2. Department of Gastroenterology; The First People's Hospital of Hangzhou; Hangzhou China
3. Division of Gastroenterology & Hepatology; University Hospital Zürich; Zürich Switzerland
4. NIHR Nottingham Digestive Diseases Biomedical Research Unit; Queen's Medical Centre; Nottingham UK
5. Zürich Centre for Integrative Human Physiology (ZIHP); University of Zürich; Zürich Switzerland