Funding for this research was provided by:
Deutsches Zentrum für Neurodegenerative Erkrankungen (BN012)
Received: 22 June 2020
Accepted: 2 October 2020
First Online: 16 October 2020
Ethics approval and consent to participate
: The study protocol was approved by the ethical committees of the medical faculties of all participating sites: the ethical committees of Berlin (Charité, Universitätsmedizin Berlin), 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 participants provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests with regard to the content of the manuscript.