1. Yong Loo Lin School of Medicine National University of Singapore Singapore Singapore
2. Department of Gastroenterology and Hepatology Changi General Hospital Singapore Singapore
3. Department of Medicine Mount Auburn Hospital Boston Massachusetts USA
4. Àrea de malalties digestives Hospital Vall d'Hebron Barcelona Spain
5. Department de Medicina, Facultat de Medicina CIBERehD, Universitat Autònoma de Barcelona Barcelona Spain
6. Liver Unit, Division of Gastroenterology University of Alberta Edmonton Alberta Canada
7. Division of Gastroenterology, Department of Medicine, Schulich School of Medicine Western University & London Health Sciences Centre London Ontario Canada
8. Department of Epidemiology and Biostatistics, Schulich School of Medicine Western University London Ontario Canada
9. Departamento de Gastroenterologia, Escuela de Medicina Pontificia Universidad Catolica de Chile Santiago Chile