Text and Data Mining valid from 2019-12-01
Received: 26 September 2019
Accepted: 29 November 2019
First Online: 20 December 2019
: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. The authors declare as well that the research was conducted in the absence of any non-financial competing interest. In synthesis the authors declare no competing interests.