Kaliszewski, Krzysztof http://orcid.org/0000-0002-3291-5294
Zubkiewicz-Kucharska, Agnieszka
Kiełb, Paweł
Maksymowicz, Jerzy
Krawczyk, Aleksander
Krawiec, Otto
Article History
Received: 31 August 2018
Accepted: 28 September 2018
First Online: 10 October 2018
Ethics approval and consent to participate
: All research was carried out in compliance with the Helsinki Declaration. This study was approved by the Ethics Committee of Wroclaw Medical University (number: KB-27/2018). The data were analyzed anonymously and retrospectively on the basis of medical records. The authors did not have access to any identifying patient information and did not have any direct access to the study participants.
: Not applicable.
: The authors declare that they have no competing interest.
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