From the Garibaldi-Nesima Hospital (M.M.G.), Catania; Civico e Benfratelli Hospital (L.P.), Palermo; Rummo Hospital (M.S.), Benevento; S. Antonio Abate Hospital (C.P.), Trapani; Umberto I Hospital (C.V.), Enna; Perrino Hospital (M.C.S.), Brindisi; S. Sebastiano Hospital (F.M.), Caserta; Villa Sofia Hospital (O.P.), Palermo; S. Elia Hospital (S.G.), Caltanisetta; Moscatello Hospital (G.C.), Augusta; S. Giovanni di Dio Hospital (I.V.), Agrigento; Garibaldi Hospital (S.M.), Catania; and Medtronic Italy... (At 2009-04)