Vasileva, E A
Shuvalov, O U
Garabadgiu, A V
Melino, G
Barlev, N A
Article History
Received: 26 March 2015
Revised: 15 May 2015
Accepted: 18 May 2015
First Online: 23 July 2015
Competing interests
: The authors declare no conflict of interest.