Text and Data Mining valid from 2018-05-30
Received: 4 January 2018
Revised: 11 March 2018
Accepted: 21 March 2018
First Online: 30 May 2018
Change Date: 1 August 2018
Change Type: Correction
Change Details: Since the advance online publication of this article, the authors of the above paper have noticed errors in the list of authors and affiliations. The article with correct author information now appears in this issue.
Compliance with ethical standards
: The authors declare that they have no conflict of interest.