1. Division of Gastroenterology, First Department of Medicine, Medical School, University of Pécs, 13 Ifjúság Street, 7624 Pecs, Hungary
2. Institute of Bioanalysis, Medical School, University of Pécs, 7624 Pecs, Hungary
3. First Department of Medicine, University of Szeged, 6720 Szeged, Hungary
4. Department of Gastroenterology, Hungarian Defence Forces Military Hospital, 1134 Budapest, Hungary
5. Balassa János Hospital, 7100 Szekszárd, Hungary
6. Institute for Translational Medicine, Medical School, University of Pécs, 7624 Pecs, Hungary