Received: 14 April 2020
Accepted: 9 June 2020
First Online: 2 October 2020
Ethics approval and consent to participate
: The study protocol was approved by the ethics committee of the Medical Faculty of the University of Göttingen. Informed consent was obtained from each participant.
: Consent for publication was obtained from each participant.
: CHL reports that he is receiving royalties from Hogrefe Huber Publishers for the German version of the HADS. During the last 3 years, he has received lecture honoraria from Servier, Heel, and Novartis. LB received reagents for the determination of NT-proBNP from Roche Diagnostics. All other authors report no conflicts of interest.