Funding for this research was provided by:
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (156072)
Text and Data Mining valid from 2019-02-13
Received: 20 March 2018
Accepted: 22 January 2019
First Online: 13 February 2019
Ethics approval and consent to participate
: The ethics approval for this project was provided by the University of Zurich, as per the school’s guidelines (swissethics number: Req-2017-00468). In line with ethical guidelines, all participants volunteered to participate, signed a written consent for study participation and were allowed to end the experiment at any time. All participants were older than 18 years old and were compensated with CHF 20.-.
: The photographer (Fig. InternalRef removedb) and individuals portrayed provided consent for the image to be used in this publication.
: The authors declare that they have no competing interests.
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