Janus, Patryk http://orcid.org/0000-0003-2002-3499
Toma-Jonik, Agnieszka http://orcid.org/0000-0002-9282-4925
Vydra, Natalia http://orcid.org/0000-0001-7749-7770
Mrowiec, Katarzyna http://orcid.org/0000-0001-6181-9122
Korfanty, Joanna http://orcid.org/0000-0001-6942-9823
Chadalski, Marek http://orcid.org/0000-0001-6602-082X
Widłak, Piotr http://orcid.org/0000-0001-5099-4726
Dudek, Karolina http://orcid.org/0000-0002-0433-4185
Paszek, Anna http://orcid.org/0000-0001-5697-2309
Rusin, Marek http://orcid.org/0000-0002-0143-9192
Polańska, Joanna http://orcid.org/0000-0001-8004-9864
Widłak, Wiesława http://orcid.org/0000-0002-8440-9414
Article History
Received: 16 May 2019
Revised: 15 January 2020
Accepted: 16 January 2020
First Online: 29 January 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.