Zawlik, Izabela
Kaznowska, Ewa
Cebulski, Jozef
Kolodziej, Magdalena
Depciuch, Joanna
Vongsvivut, Jitraporn
Cholewa, Marian
Article History
Received: 8 July 2016
Accepted: 21 October 2016
First Online: 18 November 2016
Competing interests
: The authors declare no competing financial interests.