Frelich, Henryk
Ścierski, Wojciech http://orcid.org/0000-0003-3242-8047
Marków, Magdalena
Frelich, Jakub
Frelich, Hanna
Maciej, Misiołek
Funding for this research was provided by:
Medical University of Silesia
Article History
Received: 7 November 2018
Accepted: 21 January 2019
First Online: 14 February 2019
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. The study was approved by the Bioethical Committee at the Silesian Medical Chamber in Katowice, Poland (25/2016 of 27 July 2016).
: Informed consent was obtained from all individual participants included in the study.