Fedotenkov, Igor http://orcid.org/0000-0003-3344-4401
Article History
Received: 8 August 2017
Accepted: 6 July 2018
First Online: 13 July 2018
Compliance with Ethical Standards
:
: The author declares that he has not received any grant, honoraria or financial support (apart from the official salary). The author declares that he has no conflict of interest.