Gotz-Więckowska, Anna
Chmielarz-Czarnocińska, Anna
Pawlak, Marta http://orcid.org/0000-0002-8465-1753
Gadzinowski, Janusz
Mazela, Jan
Article History
Received: 15 May 2017
Accepted: 29 August 2017
First Online: 19 September 2017
Competing Interests
: The authors declare that they have no competing interests.