aDepartment of Cardiology, University Heart & Vascular Center Hamburg, University Medical Center Hamburg-Eppendorf

bGerman Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck

cCenter for Population Health Innovation (POINT), University Heart and Vascular Center Hamburg, University Medical Center Hamburg-Eppendorf, Hamburg, Germany

Correspondence to Christoph Waldeyer, PD Dr med., Department of Cardiology, University Heart & Vascular Center Hamburg, University Medical Center Hamburg-Eppendorf Martinistrasse 52, 20246 Hamburg, Germany. Tel: +49 40 7410 56800; e-mail: [email protected]