Article History
Received: 29 July 2019
Accepted: 25 November 2019
First Online: 2 December 2019
Compliance with ethical standards
:
: The authors have no conflict of interest to report.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Medical University of Warsaw and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants.