Text and Data Mining valid from 2019-04-05
Received: 23 October 2018
Accepted: 26 March 2019
First Online: 5 April 2019
Ethics approval and consent to participate
: The study was approved by the Bioethics Human Research Committee of the Medical University of Bialystok (Permission No. R-I-002/383/2015) and was conducted in agreement with the Helsinki-II-declaration. All subjects included in the study gave their informed written consent.
: Not applicable.
: The authors declare that they have no competing interests.
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