Text and Data Mining valid from 2019-10-31
Received: 25 April 2019
Accepted: 27 September 2019
First Online: 31 October 2019
Compliance with ethical standards
: The authors declare that there is no conflict of interest directly related to this article.
: Due to the fact that this research uses secondary data (use of data initially collected for anoither purpose)there is no form of identifier or data linkage or results that could generate identifiable information the article was exempt from Ethics approval.
: This article does not contain any studies with human participants or animals performed by any of the authors.
: For retrospective review, formal consent is not required.