Valuev, I. L.
Vanchugova, L. V.
Valuev, L. I.
Article History
Received: 27 February 2019
Revised: 22 June 2019
Accepted: 30 August 2019
First Online: 13 March 2020
COMPLIANCE WITH ETHICAL STANDARDS
: The authors declare that they do not have conflict of interest. The study was performed without the use of animals and without the involvement of human subjects.