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Authors
Vinnikov, Denis https://orcid.org/0000-0003-0991-6237
Raushanova, Aizhan
Romanova, Zhanna
Tulekov, Zhangir
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Article History
Received: 1 April 2021
Accepted: 13 August 2021
First Online: 21 August 2021
Declarations
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: The study was approved by the local Committee on Bioethics of the School of Public Health of Al-Farabi Kazakh National University. Every participant signed an informed consent to participate. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.
