Stasiak, Aleksandra http://orcid.org/0000-0002-8532-5140
Smolewska, Elżbieta http://orcid.org/0000-0002-8421-0448
Funding for this research was provided by:
Uniwersytet Medyczny w Lodzi (503/8-000-04/503-81-002)
Article History
Received: 8 February 2019
Accepted: 13 March 2019
First Online: 22 March 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Retrospective data was used for this study, ethics approval was not required for this study at our institution. All procedures were performed in accordance with ethical standards of the Helsinki declaration. Legal guardian of each patient consented to review of the medical records and to the use of the data.