Kucybała, Iwona http://orcid.org/0000-0002-5823-4390
Tabor, Zbisław http://orcid.org/0000-0002-9688-9718
Polak, Jakub http://orcid.org/0000-0001-9805-8267
Urbanik, Andrzej http://orcid.org/0000-0001-9541-6727
Wojciechowski, Wadim http://orcid.org/0000-0002-0748-3995
Article History
Received: 4 December 2019
Accepted: 2 January 2020
First Online: 18 January 2020
Compliance with ethical standards
:
: Iwona Kucybała, Zbisław Tabor, Jakub Polak, Andrzej Urbanik and Wadim Wojciechowski 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 research committee (Jagiellonian University Bioethics Committee, No. of approval: 1072.6120.156.2018, date of approval: 22nd June 2018) and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. This article does not contain any studies with animals performed by any of the authors.
: For this type of study, informed consent is not required, because of its retrospective and non-interventional character and the use of anonymised data.