1. Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
2. The N.1 Institute for Health, National University of Singapore, Singapore
3. Department of Gastroenterology and Hepatology, Tan Tock Seng Hospital, Singapore
4. Department of Gastroenterology and Hepatology, Singapore General Hospital, Singapore
5. Duke-NUS Graduate School of Medicine, Singapo
6. Gastroenterology and Hepatology Service, Department of General Medicine, Sengkang General Hospital, Singapore
7. Aliveomedical Group, Singapore
8. Department of Medicine, Ng Teng Fong General Hospital, Singapore
9. Division of Gastroenterology, Department of General Medicine, Khoo Teck Puat Hospital, Singapore
10. Department of Gastroenterology, Changi General Hospital, Singapore
11. Division of Gastroenterology and Hepatology, Department of Medicine, National University Hospital, Singapore