Zhumabayev, Ruslan
Zhumabayeva, Galiya
Kapanova, Gulnara
Tulepbekova, Nailya
Akhmetzhan, Anuar
Grjibovski, Andrej
Article History
Received: 28 May 2021
Accepted: 30 March 2022
First Online: 11 April 2022
Declarations
:
: All the methods were carried out in accordance with relevant guidelines and regulations. Ethics committee of Al-Farabi Kazakh National University Review Board approved this study (IRB – A060). Written informed consent was obtained from all parents and/or legal guardians who agreed to participate in this study. Participants of this research received no compensation for their input.
: Not applicable.
: The authors declare that they have no competing interests.