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Figure 5 (A) CARTO map of the left atrium in the posteroanterior (PA) view in one patient. This is consistent with focal activation pattern with a broad area of early activation (red) at the posterior lateral mitral annulus. (B) CARTO map of the left atrium in the left anterior oblique (LAO) view in another patient. This is also consistent with a focal activation pattern and a broad area of early activation (red) at the posterior lateral mitral annulus.