Wiewiora, Maciej
Mertas, Anna
Gluck, Marek
Nowowiejska-Wiewiora, Alicja
Czuba, Zenon
Piecuch, Jerzy
Funding for this research was provided by:
Medical University of Silesia
Article History
First Online: 19 April 2020
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants included in the study.