Chrapkiewicz, Radosław
Jachura, Michał
Banaszek, Konrad http://orcid.org/0000-0002-5389-6897
Wasilewski, Wojciech
Article History
Received: 7 January 2016
Accepted: 2 June 2016
First Online: 18 July 2016
Competing interests
: The authors declare no competing financial interests.