Text and Data Mining valid from 2019-02-04
Received: 7 December 2018
Accepted: 22 January 2019
First Online: 4 February 2019
Ethics approval and consent to participate
: The study was approved by the local Institutional Review Board and the local Medical Ethical Committee (University Hospital Zurich). General consent was obtained according to the institutional guidelines.
: General consent was obtained according to the institutional guidelines.
: None of the authors have any conflicts of interests to declare. The authors received no pharmaceutical or industrial support for this study. No further direct or indirect financial support or other assets were transferred to the authors or their family members for this study. The authors declare that they have no competing interests.
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