1. Clinic of Neurosurgery, Gamma Knife, University Clinical Centre of Serbia, 11000 Belgrade, Serbia
2. Faculty of Medicine, Institute of Social Medicine, University of Belgrade, 11000 Belgrade, Serbia
3. Institute of Public Health of Serbia “Dr Milan Jovanovic Batut”, 11000 Belgrade, Serbia
4. Faculty of Medicine, Institute of Human Genetics, University of Belgrade, 11000 Belgrade, Serbia
5. Clinic for Gynecology and Obstetrics, University Clinical Centre of Serbia, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia