Bola, Łukasz
Siuda-Krzywicka, Katarzyna
Paplińska, Małgorzata
Sumera, Ewa
Zimmermann, Maria
Jednoróg, Katarzyna
Marchewka, Artur
Szwed, Marcin
Article History
Received: 27 April 2017
Accepted: 30 November 2017
First Online: 12 December 2017
Competing Interests
: The authors declare that they have no competing interests.