Text and Data Mining valid from 2019-02-12
First Online: 12 February 2019
Compliance with Ethical Standard
: The author declares that the article content was composed in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. The authors declare that they have no conflict or interest.
: This article is a novel work and does not include research involving human participants and/or animals. This manuscript is our original work and is free from plagiarism; each author has participated sufficiently in the work. The order of authorship is as stated on the title page of the manuscript. Each of us has seen the final version of the manuscript submitted for publication and has approved of it. The manuscript has been read and approved by all authors. This manuscript or a substantial part of it has not been submitted to any other journal for publication. It has also not been published previously.