Korshak, V. F. http://orcid.org/0000-0001-5957-3186
Shapovalov, Yu. O. http://orcid.org/0000-0001-9274-7352
Mateychenko, P. V. http://orcid.org/0000-0002-4074-195X
Article History
Received: 5 September 2017
Accepted: 22 February 2018
First Online: 5 March 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interests.