Text and Data Mining valid from 2019-07-31
Received: 15 March 2019
Accepted: 2 July 2019
First Online: 31 July 2019
Ethics approval and consent to participate
: The study protocol was approved by the ethical committees of the medical faculties of all participating sites. These were as follows: The ethical committees of Berlin (Charité, University Medicine), Bonn, Cologne, Göttingen, Magdeburg, Munich (Ludwig-Maximilians-University), Rostock, and Tübingen. The process was led and coordinated by the ethical committee of the medical faculty of the University of Bonn. The registration number of the trial at the ethical committee in Bonn is 117/13. All patients provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.