1. Department of Physiology, Faculty of Natural Sciences and Mathematics, “Ss. Cyril and Methodius” University, Skopje, Macedonia
2. Department of Abdominal Surgery, Faculty of Medicine, “Ss. Cyril and Methodius” University, Skopje, Macedonia
3. Department of Radiology and Physical Therapy and Department of Internal Diseases in Ruminants, Faculty of Veterinary Medicine, “Ss. Cyril and Methodius” University, Skopje, Macedonia