1. Department of Medicine, Ng Teng Fong General Hospital, National University Health System, Singapore, Singapore
2. Division of Gastroenterology and Hepatology, Department of Medicine, National University Hospital, Singapore, Singapore
3. G Oppenheimer Center for Neurobiology of Stress and Resilience (CNSR), David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
4. Singapore Institute for Clinical Sciences (SICS), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
5. Departments of Pediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
6. Khoo Teck Puat-National University Children’s Medical Institute, National University Health System (NUHS), Singapore, Singapore
7. Departments of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore