Trojanowski, Damian
Hołówka, Joanna
Ginda, Katarzyna
Jakimowicz, Dagmara
Zakrzewska-Czerwińska, Jolanta
Article History
Received: 26 September 2016
Accepted: 30 January 2017
First Online: 6 March 2017
Competing interests
: The authors declare no competing financial interests.