Pokorska-Śpiewak, Maria
Stańska-Perka, Aleksandra
Popielska, Jolanta
Ołdakowska, Agnieszka
Coupland, Urszula
Zawadka, Konrad
Szczepańska-Putz, Małgorzata
Marczyńska, Magdalena
Article History
Received: 5 May 2017
Accepted: 24 August 2017
First Online: 26 September 2017
Competing Interests
: The authors declare that they have no competing interests.