Text and Data Mining valid from 2019-02-22
First Online: 22 February 2019
Compliance with Ethical Standards
: Víctor-Hugo González-Cárdenas, Evelyn Constantin, Marta Somaini, Anna Radzioch, and Pablo Ingelmo declare they have no conflict of interest.
: This article does not contain any studies with human or animal subjects performed by any of the authors.