1. Vascular Surgery, Department of Surgical Sciences, University of Insubria, Varese, Italy, gabriele.piffaretti@ tiscali.it
2. Vascular Surgery, Department of Surgical Sciences, University of Insubria, Varese, Italy
3. Cardiac Surgery, Department of Surgical Sciences, University of Insubria, Varese, Italy
4. Anaesthesia and Palliative Care, Circolo University Hospital, Varese, Italy
5. Interventional Radiology, Department of Radiology, University of Insubria, Varese, Italy