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Frequency distribution of AF episode durations. Relative frequencies of the AF (>2 s) episodes before (A, black) and after ICA 1 µM (B, red). X-axis is divided in 2 s bins, except for the last bin which includes all AF episodes longer than 10 s. n = 13. mmHg refers to LA balloon pressure. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
