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Authors
Kulapina, E. G.
Kulapina, O. I.
Ankina, V. D.
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Article History
Received: 12 November 2018
Revised: 11 January 2019
Accepted: 25 August 2019
First Online: 18 March 2020
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Statement of compliance with standards of research involving humans as subjects</i>. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants involved in the study.
: <i>Conflict of interests</i>. The authors declare that they have no conflict of interest.
