Funding for this research was provided by:
Text and Data Mining valid from 2018-02-12
Received: 2 August 2017
Accepted: 13 December 2017
First Online: 12 February 2018
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.The study was approved by the local ethics committee (Ethikkommission Zentral- und Nordwestschweiz (EKNZ), Registration-Nr: 2016–01647). All procedures performed in this study involving human participants were in accordance with the ethical standards.Informed consent was obtained from all individual participants who underwent clinical follow-up. Informed consent from the other patients was waived by the ethics committee due to the retrospective design.
: The authors declare that they have no competing interests.
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