Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (AR 712/4-1)
Bundesministerium für Bildung und Forschung (01UU0907)
H2020 Marie Skłodowska-Curie Actions (642893)
Text and Data Mining valid from 2019-04-01
Received: 9 September 2018
Accepted: 21 March 2019
First Online: 1 April 2019
Compliance with Ethical Standards
: The authors declare that they have no conflict of interest.
: All procedures in this study involving human participants were conducted according to the ethical standards of the German Research Foundation (DFG) and in compliance with national data protection acts.