Funding for this research was provided by:
Uniwersytet Medyczny w Bialymstoku
Received: 25 July 2018
Accepted: 19 December 2018
First Online: 28 December 2018
Ethics approval and consent to participate
: The study was done upon R-I-002/35/2009 approval of the Bioethical Committee of the Medical University of Bialystok, Poland. Written informed consent was obtained from all subjects prior to participation in the study.
: Not applicable.
: The authors declare that they have no competing interests.
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