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Figure 4 Kaplan-Meier survival and event-free survival curves of patients in AF with echocardiographic score >8 after PMV. Numbers at the bottom represent patients alive and free of combined events (mitral valve surgery or redo-PMV) uncensored at the end of each of period of observation for 206 patients in NSR (top) and 123 patients in AF (bottom) entered at the outset of the study. Abbreviations as in Figure 1.