Funding for this research was provided by:
Text and Data Mining valid from 2019-11-09
Received: 16 July 2019
Accepted: 14 October 2019
First Online: 9 November 2019
Compliance with ethical standards
: Ethics approval was obtained from the relevant institutions (Ethics# LR62-2018 and 2018-303).
: The authors declare that they have no conflict of interest.
: The funders had no role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript.