AF.32 SPATZ 3 ADJUSTABLE BALLOON SYSTEM: FEASIBILITY, EFFICACY AND SAFETY ISSUES OF A DUAL CENTER EXPERIENCE. (September 2021) - De Nucci, G.; Simeth, C.; Imperatore, N.; Reati, R.; Mandelli, E.D.; Morganti, D.; Redaelli, D.G.; Monica, F.; Manes, G.