1. St George’s University of London, London, UK
2. University of Nicosia Medical School, University of Nicosia, Nicosia, Cyprus
3. Department of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
4. School of Biomedical Sciences, The University of Queensland, St Lucia, Australia
5. Division of Gastroenterology and Hepatology, Indiana University, Indianapolis, IN, USA
6. Pediatrics Department Swedish Medical Group, Chicago, IL, USA