Kałka, D
Domagała, Z
Rakowska, A
Womperski, K
Franke, R
Sylwina-Krauz, E
Stanisz, J
Piłot, M
Gebala, J
Rusiecki, L
Pilecki, W
Article History
Received: 5 January 2014
Revised: 28 April 2015
Accepted: 12 August 2015
First Online: 3 December 2015
Competing interests
: The authors declare no conflict of interest.