Text and Data Mining valid from 2018-04-30
Received: 20 March 2018
Accepted: 28 March 2018
First Online: 30 April 2018
Compliance with ethical standards
: The scientific guarantor of this publication is Thomas M. Link
: The authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article.
: No complex statistical methods were necessary for this paper.
: Written informed consent was not required for this study because this is an editorial without any study subjects.
: Institutional Review Board approval was not required because this is an editorial without any study subjects.