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. Author manuscript; available in PMC: 2021 Nov 6.
Published in final edited form as: IEEE J Biomed Health Inform. 2020 Nov 6;24(11):3124–3135. doi: 10.1109/JBHI.2020.2995139

Fig. 1.

Fig. 1.

(a) Sample 30-second NSR ECG recording and (b) the corresponding HR; (c) sample 30-second AF ECG segment and (d) the corresponding HR. The QRS peaks are denoted by black circles.