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Authors
Vinnikov, Denis https://orcid.org/0000-0003-0991-6237
Tulekov, Zhangir
Romanova, Zhanna
Krugovykh, Ilya
Blanc, Paul D.
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Article History
Received: 23 June 2020
Accepted: 1 December 2020
First Online: 9 December 2020
Ethics approval and consent to participate
: The study was approved by the local Committee on Bioethics of the School of Public Health of al-Farabi Kazakh National University. Informed written consent to participate was obtained from all subjects.
: Not applicable.
: The authors declare that they have no competing interests.
