Accepted: 25 April 2022
First Online: 7 May 2022
: The authors declare that the work is written with due consideration of ethical standards. The study was conducted in accordance with the ethical principles approved by the North-Eastern Federal University in Yakutsk (Protocol No 1 of 12.03.2013).
: All the respondents have given their written informed consent for participation in the research.
: All the respondents have given their consent for publication of the research results.
: The authors declare no competing interests.