1 Second Medical Clinic, School of Medicine, Aristotle University of Thessaloniki, Ippokration Hospital, Thessaloniki, Macedonia, Greece.
2 First Laboratory of Pharmacology, Aristotle University of Thessaloniki, Thessaloniki, Macedonia, Greece.
3 Second Medical Clinic, School of Medicine, Aristotle University of Thessaloniki, Ippokration Hospital, Thessaloniki, Macedonia, Greece; Faculty of Medicine, Department of Microbiology, School of Health Sciences, Larissa University Hospital, University of Thessaly, Larissa, Greece.
4 Second Medical Clinic, School of Medicine, Aristotle University of Thessaloniki, Ippokration Hospital, Thessaloniki, Macedonia, Greece; Gastroklinik, Private Gastroenterological Practice, Horgen, Switzerland; Division of Gastroenterology and Hepatology, Medical University Department, Kantonsspital Aarau, Aarau, Switzerland.
5 Second Medical Clinic, School of Medicine, Aristotle University of Thessaloniki, Ippokration Hospital, Thessaloniki, Macedonia, Greece; Department of Gastroenterology, General University Hospital of Larissa, Larissa, Greece; Division of Gastroenterology Cleveland Clinic London, London, UK.
6 Hepatogastroenterology Unit, Second Department of Internal Medicine-Propaedeutic, Medical School, National and Kapodistrian University of Athens, Athens, Greece.
7 Second Medical Clinic, School of Medicine, Aristotle University of Thessaloniki, Ippokration Hospital, Thessaloniki, Macedonia, Greece; Department of Nutritional Sciences and Dietetics, School of Health Sciences, International Hellenic University, Alexander Campus, Thessaloniki, Macedonia, Greece.
8 Department of Gastroenterology, 401 General Military Hospital of Athens, Athens, Greece.