1. Department of Gastroenterology, Hepatology and Clinical Nutrition, University Hospital Dubrava, University of Zagreb School of Medicine and Faculty of Pharmacy and Biochemistry, Zagreb, Croatia
2. Department of Gastroenterology and Hepatology, University Hospital Centre Tuzla, Tuzla, Bosnia and Herzegovina
3. Department of Gastroenterology and Hepatology, University Hospital Split, Split, Croatia
4. Department of Endocrinology, Diabetes and Metabolism, University Hospital Dubrava, University of Zagreb School of Medicine and Faculty of Pharmacy and Biochemistry, Zagreb, Croatia
5. Vuk Vrhovac University Clinic for Diabetes, Endocrinology and Metabolic Diseases, Merkur University Hospital, University of Zagreb School of Medicine, Zagreb, Croatia
6. School of Medicine Osijek, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
7. University of Zagreb School of Medicine, Zagreb, Croatia
8. Department of Gastroenterology and Hepatology, University Hospital Merkur, Zagreb, Croatia