Dr Miyamoto reports funding/grants received from Medtronic, Biosense Webster, and Abbott and speakers’ bureaus from Medtronic, Biosense Webster, and Abbott outside the submitted work. Dr Wakamiya reports speakers’ bureaus from Medtronic, Biosense Webster, and Abbott outside the submitted work. Dr Ueda reports speakers’ bureaus from Medtronic outside the submitted work. Dr Nakajima reports speakers’ bureaus from Medtronic, and Biosense Webster outside the submitted work. Dr Kamakura reports speakers’ bureaus from Medtronic, Biosense Webster, and Abbott outside the submitted work. Dr Ishibashi reports speakers’ bureaus from Medtronic and Abbott outside the submitted work. Dr Nagase is affiliated with a department endowed by Medtronic outside the submitted work. Dr Kataoka reports funding/grants received from Medtronic and speakers’ bureaus from Medtronic, Biosense Webster, and Abbott outside the submitted work. Dr Takagi reports funding/grants received from Medtronic, Biosense Webster, and Abbott and speakers’ bureaus from Medtronic, Biosense Webster, and Abbott outside the submitted work. Dr Kusano reports funding/grants received from Medtronic, Biosense Webster, and Abbott and speakers’ bureaus from Medtronic and Biosense Webster outside the submitted work. The other authors report no conflicts.