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Authors
Petropavlovskaia, E. A.
Kanakhina, L. A.
Shestopalova, L. B.
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Article History
Received: 28 March 2019
Revised: 6 June 2019
Accepted: 11 November 2019
First Online: 31 August 2020
COMPLIANCE WITH ETHICAL STANDARDS
: Conflict of interest . The authors declare no explicit and potential conflicts of interest associated with the publication of this article.
: Statement of compliance with standards of research involving humans as subjects . All studies were conducted in accordance with the principles of biomedical ethics set out in the 1964 Helsinki Declaration and its subsequent amendments and approved by the Ethics Committee of the St. Petersburg State University (Saint-Petersburg). Each study participant provided a voluntary written informed consent signed after explanations of potential risks and benefits as well as the nature of the forthcoming investigations.
