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. 2019 Jan 11;12(3):247–256. doi: 10.1111/cts.12602

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© 2018 The Authors. Clinical and Translational Science published by Wiley Periodicals, Inc. on behalf of the American Society for Clinical Pharmacology and Therapeutics.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Visual examination of the echocardiogram (ECG) waveforms for episodes with reported heart rates of 44 bpm (a), 79 bpm (b), 203 bpm (c), and 193 bpm (d), bpm, beats/min.