Kotfis, Katarzyna
Zegan-Barańska, Małgorzata
Żukowski, Maciej
Kusza, Krzysztof
Kaczmarczyk, Mariusz
Ely, E. Wesley
Article History
Received: 16 June 2017
Accepted: 25 August 2017
First Online: 2 September 2017
Ethics approval and consent to participate
: The Bioethical Committee of the Pomeranian Medical University approved our research protocol and waived the need for written informed consent for the study. Approval number: KB-0012/506/12/16 issued on 15.12.2015.
: not applicable.
: The authors declare that they have no competing interests.
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