Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (AN372/24-1)
Horizon 2020 Framework Programme (668036)
Text and Data Mining valid from 2018-04-12
Received: 22 December 2017
Accepted: 5 April 2018
First Online: 12 April 2018
Ethics approval and consent to participate
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.