Funding for this research was provided by:
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (PBZHP1_147196)
Text and Data Mining valid from 2019-11-20
Received: 27 December 2018
Accepted: 27 September 2019
First Online: 20 November 2019
Compliance with Ethical Standards
: The authors declare that they have no conflict of interest.