Text and Data Mining valid from 2017-05-08
Received: 15 October 2016
Revised: 8 March 2017
Accepted: 10 April 2017
First Online: 8 May 2017
Compliance with ethical standards
: The scientific guarantor of this publication is Bruno C. Odisio.
: 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.
: The authors state that this work has not received any funding.
: Joe Ensor kindly provided statistical advice for this manuscript.
: Institutional Review Board approval was obtained.
: Written informed consent was waived by the Institutional Review Board.
: UnorderedList removed