Dąbrowska, Dorota
Jabłońska, Ewa
Garley, Marzena
Sawicka-Powierza, Jolanta
Nowak, Karolina
Article History
Received: 8 April 2017
Accepted: 2 January 2018
First Online: 5 February 2018
Compliance with ethical standards
:
: The authors declare no potential conflicts of interest.