1. Department of Health Economics, Corvinus University of Budapest, Budapest, Hungary
2. 1st Department of Medicine, Semmelweis University, Budapest, Hungary
3. Department of Medicine 1, Agaplesion Markus Krankenhaus, Frankfurt, Germany
4. Department of Gastroenterology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
5. Gastroenterology Unit, Clinical Universitary Hospital Lozano IIS Aragón (Blesa, IIS Aragón, CIBEREHD), Zaragoza, Spain
6. Center for Economic Research and Graduate Education (CERGE) Economics Institute (EI) Research Fellow, Charles University, Praha 1, The Czech Republic
7. Inserm U954 and Department of Hepato-Gastroenterology, University Hospital of Nancy-Brabois, Lorraine University, Vandoeuvre-lès-Nancy, France