1. Department of Gastroenterology, Hepatology and Clinical Nutrition, University Hospital Dubrava, University of Zagreb School of Medicine, Zagreb, Croatia
2. Department of Gastroenterology and Hepatology, University Hospital Centre Split, Split, Croatia
3. Department of Gastroenterology and Hepatology, University Hospital Centre Rijeka, University of Rijeka School of Medicine, Rijeka, Croatia
4. Department of Gastroenterology and Hepatology, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland
5. UCL Institute for Liver and Digestive Health, Royal Free Hospital, London, UK