Logacheva, Maria D.
Schelkunov, Mikhail I.
Shtratnikova, Victoria Y.
Matveeva, Maria V.
Penin, Aleksey A.
Article History
Received: 8 April 2016
Accepted: 27 June 2016
First Online: 25 July 2016
Competing interests
: The authors declare no competing financial interests.