Funding for this research was provided by:
H2020 Marie Skłodowska-Curie Actions
Text and Data Mining valid from 2019-02-20
Received: 6 December 2018
Revised: 5 February 2019
Accepted: 6 February 2019
First Online: 20 February 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.