Funding for this research was provided by:
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (32003B_149474)
Text and Data Mining valid from 2019-08-14
Received: 7 May 2019
Accepted: 7 August 2019
First Online: 14 August 2019
Ethics approval and consent to participate
: This study was reviewed and waived by the Zurich Cantonal Ethics Committee, KEK-StV-Nr.06/13.
: Not applicable.
: All authors declare that there are no competing interests.