1. Department of Epidemiology, Faculty of Medicine, University of Pristina temporarily seated in Kosovska Mitrovica, Kosovska Mitrovica, Kosovo, Serbia
2. Institute of Epidemiology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
3. Faculty of Medicine in Foca, University of East Sarajevo, Foca, Republic of Srpska (Bosnia and Herzegovina)
4. Department of Dentistry, Faculty of Medicine, University of Pristina temporarily seated in Kosovska Mitrovica, Kosovska Mitrovica, Kosovo, Serbia
5. Department of Pharmacology, Faculty of Medicine, University of Pristina temporarily seated in Kosovska Mitrovica, Kosovska Mitrovica, Kosovo, Serbia
6. Community Health Center Zubin Potok, Zubin Potok, Kosovo, Serbia
7. Department of Social Medicine, Faculty of Medicine, University of Pristina temporarily seated in Kosovska Mitrovica, Kosovska Mitrovica, Kosovo, Serbia
8. Department of Physiology, Faculty of Medicine, University of Pristina temporarily seated in Kosovska Mitrovica, Kosovska Mitrovica, Kosovo, Serbia
9. Clinic for Obstetrics and Gynecology, University Clinical Center of Serbia, Belgrade, Serbia
10. Faculty of Medicine, University of Belgrade, Belgrade, Serbia