Text and Data Mining valid from 2018-09-27
Received: 21 February 2018
Accepted: 16 August 2018
First Online: 27 September 2018
Ethics approval and consent to participate
: The analysis complied with the Swiss Federal Law on data protection. According to the national ethical and legal regulation, an ethical approval was not needed because the data were retrospective, pre-existing, and de-identified. Since data was anonymized, no consent of patients was required. Therefore, ethical approval and consent were waived.
: Not applicable.
: EB, RR, and OR were affiliated with the Helsana Health Insurance Company at the time when the study was conducted. MS heads the guideline commission of the DEGAM (Ständige Leilinienkommission, SLK). EB is member of the SLK.
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