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Authors
Tolstov, Sergey N. https://orcid.org/0000-0002-4546-9449
Salov, Igor A. https://orcid.org/0000-0001-7285-5639
Kiselev, Anton R. https://orcid.org/0000-0003-3967-3950
Rebrov, Andrey P. https://orcid.org/0000-0002-3463-7734
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Article History
Received: 2 November 2020
Accepted: 10 May 2021
First Online: 19 May 2021
Declarations
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: The study complied with the provisions of the Declaration of Helsinki; the study protocol was approved by the Ethics Committee at Saratov State Medical University (Saratov: Russia). Written informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.
