Funding for this research was provided by:
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (grant SNF 3200BO-116177/1, SNSF Professorship, PP00P3_150531/1)
Gottfried und Julia Bangerter-Rhyner-Stiftung
Research Council of the Kantonsspital Aarau (1410.000.044)
Text and Data Mining valid from 2018-12-01
Received: 12 June 2018
Accepted: 21 November 2018
First Online: 4 December 2018
Ethics approval and consent to participate
: The study protocol was approved by the ethics committee of the University of Basel as well as by the local ethics committees of Aarau, Muensterlingen, Solothurn and Luzern, all with the same ethical study number 87/06. Written informed consent was provided by all participants for the initial trial, including agreement to use their data anonymized in secondary analyses.
: Not applicable.
: All authors declare that they have no competing interests associated with this manuscript.
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