Dereń, K. http://orcid.org/0000-0002-4360-2306
Szewczyk, A.
Sekutowski, T. R. http://orcid.org/0000-0002-5176-337X
Article History
Received: 18 June 2018
Revised: 12 August 2018
Accepted: 22 August 2018
First Online: 3 September 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.