1. Vascular Surgery Clinic, “Dedinje” Cardiovascular Institute, Belgrade, Serbia
2. School of Medicine, Belgrade University, Belgrade, Serbia
3. Clinic for Vascular and Endovascular Surgery, Clinical Centre of Serbia, Belgrade, Serbia
4. Clinical Hospital Centre Zvezdara, Belgrade, Serbia
5. General Hospital Gornji Milanovac, Gornji Milanovac, Serbia
6. University Clinical Centre Kragujevac, Kragujevac, Serbia
7. University Clinical Centre Nis, Nis, Serbia
8. General Hospital Subotica, Subotica, Serbia
9. General Hospital Uzice, Uzice, Serbia
10. Military Medical Academy, Belgrade, Serbia