Szmigielski, C
Styczyński, G
Sobczyńska, M
Milewska, A
Placha, G
Kuch-Wocial, A
Article History
Received: 17 August 2014
Revised: 8 March 2015
Accepted: 17 March 2015
First Online: 23 April 2015
Competing interests
: The authors declare no conflict of interest.