1. Vascular Surgery, University of Siena, Italy
2. Vascular Surgery, University of Messina, Italy
3. Vascular Surgery, University of Rome Campus Biomedico, Italy
4. Vascular Surgery, University of Milan San Rafael, Italy
5. Vascular Surgery, University of Genoa, Italy
6. Vascular Surgery, University of Bari, Italy
7. Vascular Surgery, Hospital of Cuneo, Italy
8. Vascular Surgery, University of Modena, Italy
9. Vascular Surgery, University of Padua, Italy