Vasilyeva, R. M.
Parfenteva, O. I.
Orlova, N. I.
Kozlov, A. V.
Sonkin, V. D.
Article History
Received: 16 June 2022
Revised: 18 July 2022
Accepted: 22 July 2022
First Online: 12 January 2023
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflict of interests</i>. The authors declare that they have no real or potential conflict of interest.
: <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 1964 Helsinki Declaration and its later amendments and were approved by the Local Ethics Committee at the Institute of Developmental Physiology (Moscow). Informed consent was obtained from parents or legal representatives of all individual participants involved in the study. The study was approved by the administrations of the respective preschool organizations.