Text and Data Mining valid from 2018-11-07
Received: 10 September 2018
Accepted: 17 October 2018
First Online: 7 November 2018
Ethics approval and consent to participate
: The study was approved by the Jagiellonian University Medical College Ethics Committee (No. 122.6120.198.2016).
: Not applicable
: The authors declare that they have no competing interests.
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