Smirnov, A. N.
Savin, A. V.
Sigov, A. S.
Article History
Received: 22 January 2015
Revised: 28 May 2015
Accepted: 18 November 2019
First Online: 25 June 2020
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflict of interests.</i> The authors declare that they have no conflict of interest.
: This article does not contain any studies involving animals or human subjects performed by any of the authors.