Text and Data Mining valid from 2019-11-07
Received: 25 September 2019
Accepted: 22 October 2019
First Online: 7 November 2019
Compliance with ethical standards
: Author Adrien Ceccaldi declares that he has no conflict of interest. Author Sorin Mardare declares that he has no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.