1 Second Medical Clinic, School of Medicine, Aristotle University of Thessaloniki, Ippokration Hospital, Thessaloniki, Macedonia, Greece.
2 Department of Nutritional Sciences and Dietetics, School of Health Sciences, International Hellenic University, Alexander Campus, Thessaloniki, Macedonia, Greece.
3 Department of Microbiology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa University Hospital, Larissa, Greece.
4 Hepatogastroenterology Unit, Second Department of Internal Medicine-Propaedeutic, Medical School, National and Kapodistrian University of Athens, Athens, Greece.