1. Clinical Center of Montenegro, 81000 Podgorica, Montenegro
2. Faculty of Medicine, University of Montenegro, 81000 Podgorica, Montenegro
3. Department of Pharmacology and Toxicology, Faculty of Medicine Novi Sad, University of Novi Sad, 21000 Novi Sad, Serbia
4. Institute of Medical Statistics and Informatics, Faculty of Medicine, University of Belgrade, 11080 Belgrade, Serbia