Funding for this research was provided by:
Narodowe Centrum Badań i Rozwoju (POIR.01.02.00-00-0016/17)
Text and Data Mining valid from 2019-02-27
First Online: 27 February 2019
Compliance with Ethical Standards
: Tomasz Grabowski declare that his contribution in manuscript was related to financial support of The National Centre for Research and Development in Poland, Grant Number: POIR.01.02.00-00-0016/17.
: The authors declare that they have no conflict of interest.