“…Masura and associates concluded that ASO occlusion of ASDs is associated with safety and effectiveness in producing full occlusion of secundum ASDs up to a diameter of 21 mm [ 61 ]. Subsequently other investigations in children [ 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 ] and adults [ 61 , 64 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 ] including FDA-approved US trial [ 80 ] and multi-institutional European studies [ 70 , 81 ], as reviewed and tabulated elsewhere [ 20 , 21 , 24 , 82 ], demonstrated excellent results. These studies confirmed encouraging results with full occlusion rates of 62 to 96% at device implantation, which increased further at 6- to 12-month follow-up evaluation to 83 to 99% [ 59 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , …”