Strek, Wieslaw
Tomala, Robert
Lukaszewicz, Mikolaj
Cichy, Bartlomiej
Gerasymchuk, Yuriy
Gluchowski, Pawel
Marciniak, Lukasz
Bednarkiewicz, Artur
Hreniak, Dariusz
Article History
Received: 8 July 2016
Accepted: 19 December 2016
First Online: 23 January 2017
Competing interests
: The authors declare no competing financial interests.