1. Department of Pharmacology, Animal Physiology and Physiological Chemistry, Faculty of Veterinary Medicine Trakia University Stara Zagora Bulgaria
2. Department of Clinical Science University of Bergen Bergen Norway
3. Department of Sports, Food, and Natural Sciences Western Norway University of Applied Sciences Bergen Norway
4. Department of Heart Disease Haukeland University Hospital Bergen Norway
5. Department of Veterinary Anatomy, Histology and Embryology, Faculty of Veterinary Medicine Trakia University Stara Zagora Bulgaria