Polanski, Jaroslaw
Kucia, Urszula
Duszkiewicz, Roksana
Kurczyk, Agata
Magdziarz, Tomasz
Gasteiger, Johann
Article History
Received: 6 April 2016
Accepted: 25 May 2016
First Online: 23 June 2016
Competing interests
: The authors declare no competing financial interests.