Wirth, Brigitte
Riner, Fabienne
Peterson, Cynthia
Humphreys, Barry Kim
Farshad, Mazda
Becker, Susanne
Schweinhardt, Petra
Article History
Received: 16 May 2018
Accepted: 13 December 2018
First Online: 5 February 2019
Ethics approval and consent to participate
: This study was approved by the Ethics review board of the Canton of Zurich (EK-16/2009; update PB_2017–00402).
: Not applicable.
: The authors declare that they have no competing interests.
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