Funding for this research was provided by:
Boehringer Ingelheim (NA)
Received: 17 September 2018
Accepted: 27 November 2018
First Online: 5 February 2019
Ethics approval and consent to participate
: We received ethical approval for this study by the local ethical committee (Ethikkommission Nordwest- und Zentralschweiz (EKNZ), formerly Ethikkommission beider Basel (EKBB)) in 2006 (EK Nr. 170/06) and subsequently by ethical committees of all other participating Swiss cantons. The study was also registered on ClinicalTrials.gov (NCT02065921).
: Not applicable.
: The authors declare that they have no competing interests in relation to the work described.
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