1. Faculty of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
2. Alma Scientifique SA, Brussels, Belgium
3. Biotrast UETP, Thessaloniki, Greece
4. 4th Internal Medicine Clinic, Faculty of Medicine, Aristotle University of Thessaloniki, Greece
5. Department of Physiology, Faculty of Medicine, Aristotle University of Thessaloniki, Greece
6. Faculty of Medicine, Medical University of Varna, Bulgaria