[1] Univ Siena, Dept Med Surg & Neurosci, Vasc & Endovasc Surg Unit, Sch Med, I-53100 Siena, Italy
[2] Univ Pavia, Sch Med, Vasc & Endovasc Surg Unit, I-27100 Pavia, Italy
[3] GVM Care & Res, Maria Cecilia Hosp, Cotignola, Ravenna, Italy
[4] Clin Multimed, Vasc & Endovasc Surg Unit, Castellanza, Varese, Italy
[5] U Parini Hosp, USL Valle Aosta, Vasc & Endovasc Surg Unit, Aosta, Italy
[6] Univ Florence, Sch Med, Vasc & Endovasc Surg Unit, Florence, Italy
[7] Citta Castello Hosp, USL Umbria 1, Neurol Unit, Perugia, Italy
[8] Univ Roma La Sapienza, Policlin Umberto 1, Paride Stefanini Dept, Vasc Surg Unit, I-00185 Rome, Italy
[9] Univ Roma La Sapienza, Policlin Umberto 1, Pietro Valdoni Dept, Vasc Surg Unit, I-00185 Rome, Italy