1 Second Medical Clinic, School of Medicine, Ippokration Hospital, Aristotle University of Thessaloniki, Thessaloniki, Macedonia, Greece.
2 Division of Gastroenterology and Hepatology, Medical University Department, Kantonsspital Aarau, Aarau, Switzerland.
3 First Laboratory of Pharmacology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Macedonia, Greece.
4 Department of Nutritional Sciences and Dietetics, School of Health Sciences, International Hellenic University, Alexander Campus, Thessaloniki, Macedonia, Greece.
5 Department of Gastroenterology, University Hospital of Larisa, Larisa, Greece.
6 School of Healthcare Sciences, Midwifery Department, University of West Macedonia, Kozani, Macedonia, Greece.
7 Department of Gastroenterology, 401 General Military Hospital of Athens, Attiki, Greece.
8 Healthcare Management Program, School of Economic and Management, Open University of Cyprus, Nicosia, Cyprus.
9 Alexandrovska University Hospital, Medical University Sofia, Sofia, Bulgaria.