Vorobjeva, N. V.
Chernyak, B. V.
Article History
Received: 30 April 2020
Revised: 3 June 2020
Accepted: 23 June 2020
First Online: 30 October 2020
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflict of interest.</i> The authors declare that they have no conflict of interest.
: <i>Statement of compliance with standards of research involving humans as subjects.</i> Informed consent was obtained from all individual participants involved in the study. The research was conducted according to the Helsinki Declaration on the Ethical Principles for Medical Research (2000) and the European Council Convention Protocol on Human Rights and Biomedicine (1999). The study was approved by the local committee on ethics of the Russian Children’s Clinical Hospital of the Pirogov Russian National Research Medical University of the Ministry of Health of Russia.