Goncharova, K
Skibo, G
Kovalenko, T
Osadchenko, I
Ushakova, G
Vovchanskii, M
Pierzynowski, S G
Article History
Received: 10 January 2015
Revised: 5 April 2015
Accepted: 24 April 2015
First Online: 15 June 2015
Competing interests
: The authors declare no conflict of interest.