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Article History

Received: 12 October 2017

Accepted: 8 March 2018

First Online: 27 March 2018

Ethics approval and consent to participate

: The study was approved by the local Ethical Committee of Salzburg (415-E/2228/3-2017).

: Not applicable.

: H.S. received an honorarium for participation in advisory board meetings for Bayer Healthcare and Böhringer Ingelheim. O.G. received an honorarium for participation in advisory board meetings for Bayer Healthcare and Böhringer Ingelheim. W.V., M.B., M.P., M.M. and O.P. declare no competing interests.

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