Litko-Rola, Monika http://orcid.org/0000-0003-3894-937X
Szkutnik, Jacek http://orcid.org/0000-0002-7842-1775
Różyło-Kalinowska, Ingrid http://orcid.org/0000-0001-5162-1382
Funding for this research was provided by:
Medical University of Lublin
Article History
Received: 6 February 2020
Accepted: 15 May 2020
First Online: 17 June 2020
Compliance with ethical standards
:
: This retrospective study involving human participants was in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The Ethics Committee of the Medical University of Lublin, Poland, approved this study (no. KE-0254/158/2018).
: For this type of study (retrospective study), formal consent was not required.
: The authors declare that they have no conflict of interest.