Selivanova, O. N.
Zhigadlova, G. G.
Article History
Received: 12 August 2019
Revised: 21 October 2019
Accepted: 28 November 2019
First Online: 18 May 2020
COMPLIANCE WITH ETHICAL STANDARDS
: The authors declare that they have no conflict of interest. This article does not contain any studies involving animals or human participants performed by any of the authors.