Funding for this research was provided by:
Käthe Zingg-Schwichtenberg Fonds (KZS 19/13)
Article History
Received: 21 April 2017
Accepted: 28 February 2018
First Online: 7 March 2018
Ethics approval and consent to participate
: The local ethics committee (Ethikkommission Zürich) judged the project as a health service research with no ethical risk (KEK-StV-Nr. 42/14). Informed consent was obtained in written by all interview participants.
: Not applicable.
: The authors declare that they have no competing interests.
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