1. Department of Cardiology, Bern University Hospital, 3010 Bern, Switzerland
2. Department of Pharmacological and Biomolecular Sciences, University of Milan, Milan, Italy
3. Nuffield Department of Population Health, University of Oxford, Oxford, UK
4. Department of Cardiology, Hacettepe University, Ankara, Turkey
5. Department of Cardiology, Geneva University Hospital, Geneva, Switzerland