Funding for this research was provided by:
Uniwersytet Medyczny w Bialymstoku
Text and Data Mining valid from 2018-11-27
Received: 29 June 2018
Accepted: 9 November 2018
First Online: 27 November 2018
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committee, Medical University of Białystok (R-I-002/345/2007), and a written informed consent had previously been obtained from each man or from her family member(s).
: Not applicable.
: The authors declare that they have no competing interests.
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