Dereń, Katarzyna
Nyankovskyy, Serhiy
Nyankovska, Olena
Łuszczki, Edyta
Wyszyńska, Justyna http://orcid.org/0000-0002-5786-6214
Sobolewski, Marek
Mazur, Artur
Article History
Received: 3 October 2017
Accepted: 9 February 2018
First Online: 26 February 2018
Competing Interests
: The authors declare no competing interests.