Funding for this research was provided by:
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (32003B_156902)
Bundesamt für Gesundheit (16.927730)
Received: 22 November 2018
Accepted: 1 May 2019
First Online: 21 May 2019
Ethics approval and consent to participate
: The research was conducted in accordance with the Declaration of Helsinki and national and institutional standards. The study protocol was reviewed and approved by the ethics committee of the Canton of Zurich (KEK-ZH-Nr.: 2015–0228). Written informed consent was obtained from all participants.
: Not applicable.
: AM declares that she has received research funding paid to her institution from Hoffman LaRoche, GlaxoSmithKline, Sanofi-Pasteur. All other authors: no competing interests.
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