Funding for this research was provided by:
Narodowe Centrum Nauki (2012/05/B/NZ8/00434)
Text and Data Mining valid from 2019-09-27
Received: 14 March 2016
Revised: 4 May 2019
Accepted: 7 May 2019
First Online: 27 September 2019
Compliance with Ethical Standards
: The authors declare that they have no conflict of interest.
: Proposals of these studies were approved by the Institutional Review Board at Poznan University of Medical Sciences (decisions no. 490/12 and 148/15).
: Informed consent was obtained from all individual participants included in the studies.