Funding for this research was provided by:
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (310030_149785)
Text and Data Mining valid from 2019-12-20
Received: 1 April 2019
Accepted: 4 December 2019
First Online: 20 December 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.