1. Faculty of Natural Sciences and Mathematics, Institute of Biology “Ss. Cyril and Methodius” University, Skopje, Republic of Macedonia;
2. Department of Pediatric and Preventive Dentistry Faculty of Stomatology, “Ss. Cyril and Methodius University”, Skopje, Republic of Macedonia;
3. Department of Oral Surgery, School of Dental Medicine, University of Zagreb, Zagreb, Croatia;
4. Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, Bucharest, Romania;
5. Department of Fundamental and Applied Physiology, Russian National Research Medical University, Moscow, Russia