Funding for this research was provided by:
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (CR13I1_156274/1)
Text and Data Mining valid from 2019-05-08
Received: 12 September 2018
Accepted: 16 April 2019
First Online: 8 May 2019
Ethics approval and consent to participate
: The cantonal ethics committee Zurich approved the study (No 2015–0350).
: Not applicable.
: The authors declare that they have no competing interests.
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