Pozina, G.
Kaliteevski, M. A.
Nikitina, E. V.
Denisov, D. V.
Polyakov, N. K.
Pirogov, E. V.
Goray, L. I.
Gubaydullin, A. R.
Ivanov, K. A.
Kaliteevskaya, N. A.
Egorov, A. Yu.
Clark, S. J.
Article History
Received: 10 May 2015
Accepted: 14 September 2015
First Online: 12 October 2015
Competing interests
: The authors declare no competing financial interests.