1. Institute for Epidemiology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
2. Clinical Research and Clinical Trials Unit, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
3. Department Clinical Psychology, Faculty of Psychology, Universidad Complutense de Madrid, Madrid, Spain
4. Department of Epidemiology, Faculty of Medicine, University of Pristina temporarily settled in Kosovska Mitrovica, Kosovska Mitrovica, Kosovo, Serbia
5. Department of Medicine, Rutgers New Jersey Medical School, Newark, NJ, USA
6. Faculty of Medicine, University of Belgrade, Belgrade, Serbia
7. Clinic of Obstetrics and Gynecology, Clinical Center of Serbia, Belgrade, Serbia