Tritt-Goc, J.
Jankowska, I.
Pogorzelec-Glaser, K.
Pankiewicz, R.
Ćawniczak, P.
Article History
Received: 21 July 2017
Accepted: 3 November 2017
First Online: 20 November 2017
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.