Tevyashova, Anna N
Korolev, Alexander M
Trenin, Aleksey S
Dezhenkova, Lyubov G
Shtil, Alexander A
Polshakov, Vladimir I
Savelyev, Oleg Yu
Olsufyeva, Evgenia N
Article History
Received: 13 December 2015
Revised: 5 February 2016
Accepted: 19 February 2016
First Online: 23 March 2016
Competing interests
: The authors declare no conflict of interest.
Free to read: This content has been made available to all.