Marcinkowska-Swojak, Malgorzata
Szczerbal, Izabela
Pausch, Hubert
Nowacka-Woszuk, Joanna
Flisikowski, Krzysztof
Dzimira, Stanislaw
Nizanski, Wojciech
Payan-Carreira, Rita
Fries, Ruedi
Kozlowski, Piotr
Switonski, Marek
Article History
Received: 24 February 2015
Accepted: 4 September 2015
First Online: 1 October 2015
Competing interests
: The authors declare no competing financial interests.