Text and Data Mining valid from 2019-04-11
Received: 8 January 2019
Accepted: 31 March 2019
First Online: 11 April 2019
Ethics approval and consent to participate
: This prospective observational study was approved by the local ethics committee.(Kantonale Ethikkommission KEK, Bern, Switzerland, reference number 060/10).Informed consent to participate was obtained by all patients included in the study.
: Informed consent for publication was obtained by all patients included in the study.
: The authors declare that they have no competing interests.
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