1. Department of Cardiology, Bern University Hospital, Bern, Switzerland
2. Department of Cardiology, University Heart Center, University Hospital Zurich, Switzerland
3. Division of Cardiology, Geneva University Hospital, Geneva, Switzerland
4. Barts Heart Center, London, United Kingdom
5. Service of Cardiology, Lausanne University Hospital, Lausanne, Switzerland
6. Department of Cardiology, Triemlispital, Zurich, Switzerland
7. CTU Bern and Institute of Social and Preventive Medicine (ISPM), University of Bern, Switzerland