1. Division of Pathophysiology, Department of Physiology and Pathophysiology, Faculty of Medicine, Medical University of Varna, Varna, Bulgaria.
2. Department of Social Medicine and Healthcare Organization, Faculty of Public Health, Medical University of Varna, Varna, Bulgaria.
3. Department of Chemistry, Faculty of Pharmacy, Medical University of Varna, Varna, Bulgaria.
4. Department of Anatomy and Cell Biology, Faculty of Medicine, Medical University of Varna, Varna, Bulgaria.
5. Department of Propedeutics of Internal Diseases, Faculty of Medicine, Medical University of Varna, Varna, Bulgaria.
6. Department of Biochemistry, Molecular Medicine and Nutrigenomics, Faculty of Pharmacy, Medical University of Varna, Varna, Bulgaria.