Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (CRC1076, CRC1127)
Hans Böckler Stiftung
Fonds der chemischen Industrie
Text and Data Mining valid from 2018-02-27
Received: 5 October 2017
Accepted: 1 February 2018
First Online: 27 February 2018
Compliance with ethical standards
: The authors of this manuscript have no competing interests as defined by Springer; they do not have any other interests that influence the results and discussion of this paper.
: This article does not contain any studies with human or animal subjects.