Funding for this research was provided by:
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (140960)
Text and Data Mining valid from 2018-11-21
Received: 26 July 2018
Accepted: 1 November 2018
First Online: 21 November 2018
Ethics approval and consent to participate
: The study protocol was approved by the ethics committee of the State of Bern, Switzerland (KEK-Nr. 170/12). All patients were informed and gave signed consent.
: Not applicable.
: The authors declare that they have no competing interests.
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