Runer, Armin
Jungmann, Pia
Welsch, Götz
Kümmel, Danica
Impellizzieri, Franco
Preiss, Stefan
Salzmann, Gian
Article History
Received: 11 November 2018
Accepted: 19 February 2019
First Online: 22 March 2019
Ethics approval and consent to participate
: The study was approved by the Kantonalen Ethikkommision Zürich (PB_2017-00307).
: Not applicable
: The authors declare that they have no competing interests.
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