Lysenkova, Lyudmila N
Saveljev, Oleg Y
Grammatikova, Natalya E
Tsvetkov, Vladimir B
Bekker, Olga B
Danilenko, Valery N
Dezhenkova, Lyubov G
Bykov, Eugene E
Omelchuk, Olga A
Korolev, Alexander M
Shchekotikhin, Andrey E
Article History
Received: 24 November 2016
Revised: 27 January 2017
Accepted: 23 February 2017
First Online: 19 April 2017
Competing interests
: The authors declare no conflict of interest.
Free to read: This content has been made available to all.