Funding for this research was provided by:
Russian Science Foundation (18-71-00110)
RFBR (18-29-10051_mk, 18-08- 00999_a)
Ministry of Education and Science of Russia (Project 5-100 for state support for leading universities of the Russian Federation, 1.2404.2017/4.6)
Article History
Received: 3 May 2019
Accepted: 22 October 2019
First Online: 4 November 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.