Text and Data Mining valid from 2019-03-14
Received: 13 January 2019
Accepted: 5 March 2019
First Online: 14 March 2019
Ethics approval and consent to participate
: This study received the approval of the local ethics committee (Ethikkommission Nordwestschweiz), which also gave the permission to access all used data, which was not de-identified. The study protocol number is ID 2016–01477. According to the ethics committee, written patients’ consent was not necessary, since this was a retrospective analysis.
: Not applicable.
: The authors declare that they have no competing interests.
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