Funding for this research was provided by:
Polish National Science Center (Grant no. 2013/09/B/NZ5/00767)
Text and Data Mining valid from 2018-05-30
Received: 4 December 2017
Accepted: 17 May 2018
First Online: 30 May 2018
Ethics approval and consent to participate
: The study was conducted in accordance with the Declaration of Helsinki, its protocol was approved by the Local Bioethics Committee at Collegium Medicum, Nicolaus Copernicus University in Bydgoszcz (Poland), and written informed consent was sought from all the subjects.
: The authors declare that they have no competing interests.
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