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Authors
Alekseenko, Svetlana I.
Skalny, Anatoly V.
Karpischenko, Sergey A.
Tinkov, Alexey A. https://orcid.org/0000-0003-0348-6192
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Article History
Received: 23 July 2020
Accepted: 5 August 2020
First Online: 12 August 2020
Compliance with Ethical Standards
: The protocol of the present study was approved by the Local Ethics Committee (No. 10-07/11/2018) of Mechnikov North-West State Medical University (St. Petersburg, Russia). All procedures performed were in agreement with the principles of the Declaration of Helsinki (1964) and later amendments. The parents of the examined children signed the informed consent forms prior the inclusion into the study.
: The authors declare that they have no conflict of interest.
