Skowron, Krzysztof http://orcid.org/0000-0003-0868-864X
Hulisz, Karolina
GryĆ, Grzegorz
Olszewska, Halina
Wiktorczyk, Natalia
Paluszak, Zbigniew
Article History
Received: 12 February 2018
Revised: 10 March 2018
Accepted: 13 March 2018
First Online: 11 April 2018
Compliance with ethical standards
: This article does not contain any studies with human participants or animals performed by any of the authors.