1. Department of Cardiology, University Heart & Vascular Centre Hamburg , Martinistraße 52, 20251 Hamburg , Germany
2. German Centre for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck , Martinistraße 52, 20251 Hamburg , Germany
3. Department of Cardiology, Blacktown Hospital, University of Western Sydney , Blacktown Road, Blacktown, NSW 2148 , Australia
4. School of Medicine, Western Sydney University , Locked Bag 1797, Penrith NSW 2751 , Australia