Funding for this research was provided by:
Polish Ministry of Science and Higher Education (No 0034/RS3/2015/53)
Received: 11 September 2017
Accepted: 13 February 2018
First Online: 20 February 2018
Ethics approval and consent to participate
: The experimental procedures and potential risks were explained to the participants and a written informed consent was provided and signed prior to inclusion in the study. The study was conducted in accordance with the Declaration of Helsinki, and the protocol was approved by the Ethics Committee of the Poznan University of Medical Sciences (act 769/13 archived number 10/October/2013).
: Not applicable.
: The authors declare no conflict of interest, financial or otherwise. The authors declare that the results of the study are presented clearly, honestly, and without fabrication, falsification, or inappropriate data manipulation.
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