Madejczyk, O.
Kaminski, K.
Kaminska, E.
Jurkiewicz, K.
Tarnacka, M.
Burian, A.
Paluch, M.
Article History
Received: 27 September 2016
Accepted: 5 January 2017
First Online: 6 February 2017
Competing interests
: The authors declare no competing financial interests.