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. 2021 May;9(10):880. doi: 10.21037/atm-21-2073

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2021 Annals of Translational Medicine. All rights reserved.

Open Access Statement: This is an Open Access article distributed in accordance with the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License (CC BY-NC-ND 4.0), which permits the non-commercial replication and distribution of the article with the strict proviso that no changes or edits are made and the original work is properly cited (including links to both the formal publication through the relevant DOI and the license). See: https://creativecommons.org/licenses/by-nc-nd/4.0.

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Heart rate of the rats before and after implantation of the piezoelectric vibrator. (A) Heart rate of the rats before device implantation: 190 beats/min; (B) heart rate of the after device implantation: 188 beats/min.