Text and Data Mining valid from 2019-12-01
Received: 31 May 2019
Accepted: 18 November 2019
First Online: 10 December 2019
Ethics approval and consent to participate
: The study conforms with the essential requirements of the Swiss HFG (Humanforschungsgesetz, Swiss law regulating human research) and has been approved by the Swiss Ethics Committee. A consent to participate from every patient is existing.
: Not applicable
: The authors declare that they have no competing interest.