Rogacheva, Olga N.
Izmailov, Sergei A.
Slipchenko, Lyudmila V.
Skrynnikov, Nikolai R.
Article History
Received: 18 September 2017
Accepted: 14 November 2017
First Online: 27 November 2017
Competing Interests
: The authors declare that they have no competing interests.