Malyarchuk, Boris A
Derenko, Miroslava
Denisova, Galina
Woźniak, Marcin
Rogalla, Urszula
Dambueva, Irina
Grzybowski, Tomasz
Article History
Received: 5 November 2015
Revised: 12 January 2016
Accepted: 29 January 2016
First Online: 25 February 2016
Competing interests
: The authors declare no conflict of interest.
Free to read: This content has been made available to all.