Funding for this research was provided by:
Medical University in Białystok (R-I-002/66/2014, R-I-002/419/2013)
Text and Data Mining valid from 2018-04-20
Received: 14 February 2018
Accepted: 26 March 2018
First Online: 20 April 2018
Ethics approval and consent to participate
: The subjects gave informed consent for the entry, and the study was accepted by the Ethics Committee of the Medical University in Białystok (ref. nos of the approval decisions R-I-002/419/2013 and R-I-002/66/2014).
: Not applicable
: The authors declare that they have no competing interests.
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