Text and Data Mining valid from 2020-01-11
Received: 13 June 2019
Accepted: 19 December 2019
First Online: 11 January 2020
Ethics approval and consent to participate
: The ETH Zurich Ethics Committee (Zurich, Switzerland) granted ethical approval (protocol number EK 2017-N-06). All participants were fully informed prior to participation and signed an informed consent form according to the Declaration of Helsinki before conducting any measurement.
: Institutional consent form signed by the study participant in Fig. InternalRef removed is available on request.
: The authors declare that they have no competing interests.