Funding for this research was provided by:
Received: 3 November 2020
Accepted: 9 May 2021
First Online: 24 May 2021
: The DEGS1 study protocol was consented with the Federal and State Commissioners for Data Protection and approved by the Charité-Universitätsmedizin Berlin ethics committee in September 2008 (No. EA2/047/08). Participants provided written informed consent prior to the interview and examination.
: Not applicable.
: The authors declare that they have no competing interests.