1. Clinical Centre of Serbia, Clinic for Psychiatry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
2. Institute of Medical Chemistry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
3. Department of Experimental Oncology, Institute for Oncology and Radiology of Serbia, Belgrade, Serbia
4. Institute for Medical Statistics and Informatics, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
5. Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia