Affiliation: | 1. Department of Cardiology, University and Hospital Fribourg, Fribourg, Switzerland;2. Department of Cardiology and Vascular Diseases, University of Rennes, Rennes, France;3. Department of Cardiology, Polyclinique les Fleurs, Ollioules, France;4. Department of Cardiology, Lausanne University Hospital, Lausanne, Switzerland |