1. Department of Occupational Medicine, Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia
2. Institute of Occupational Health of Novi Sad, Novi Sad, Serbia
3. Clinical Centre of Vojvodina, Novi Sad, Serbia
4. Department of Nursing, Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia
5. Department of Pharmacology and Toxicology, Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia