1. Department of Gastroenterology and HepatologyVirgen de las Nieves University Hospital Granada Spain
2. Department of GastroenterologyGlasgow Royal Infirmary Glasgow UK
3. Department of Medical GastroenterologyOdense University Hospital Odense Denmark
4. Section of Digestive Diseases, Yale School of Medicine New Haven Connecticut USA
5. VA Connenticut Healthcare System West Haven Connecticut USA
6. Retired gastroenterologist Truro UK
7. Department of Gastroenterology and HepatologySingapore General Hospital Singapore
8. Gastroenterology Unit, Southern District Health BoardDunedin Hospital Dunedin New Zealand