Text and Data Mining valid from 2019-01-19
Received: 26 March 2018
Accepted: 25 October 2018
First Online: 19 January 2019
Compliance with ethical standards
: All the authors declare that they have no conflict of interest.
: According to Italian law, approval from a local ethics committee was not required.
: This article does not contain any studies with animals performed by any of the authors.
: According to Italian law, informed consent from included individuals are not required for this type of study.