1. University of Kragujevac , Faculty of Medical Sciences, Department of Radiology , Kragujevac , Serbia
2. Clinical Center “Kragujevac” , Kragujevac , Serbia
3. University of Kragujevac , Faculty of Medical Sciences, Department of Gynecology and Obstetrics , Kragujevac , Serbia
4. Public Health Institute , Kragujevac , Serbia
5. University of Kragujevac , Faculty of Medical Sciences, Department of Microbiology and Immunology , Kragujevac , Serbia
6. University of Kragujevac , Faculty of Medical Sciences , Kragujevac , Serbia
7. Military Medical Academy , Belgrade , Serbia
8. University of Kragujevac , Faculty of Medical Sciences, Department of Medical Statistics and Informatics , Kragujevac , Serbia