Mechanical Thromboaspiration of Acute Thrombosis of Dialysis Arteriovenous Fistulae and Grafts using the Penumbra Indigo System: Preliminary Results from a Single Center Experience - Ruffino, Maria Antonella; Ruffino, Maria Antonella; Fronda, Marco; Discalzi, Andrea; Mancini, Andrea; Muratore, Pierluigi; Rossato, Denis; Righi, Dorico; Fonio, Paolo (The Arab Journal of Interventional Radiology, 2019)