1. Department of Cardiology, University Hospital Bern, 3010 Bern, Switzerland
2. Department of Primary Education, University of Ioannina, Ioannina, Greece
3. Centre de Recherche Épidémiologie et Statistique Sorbonne Paris Cité (CRESS-UMR1153), Inserm/Université Paris Descartes, Paris, France
4. Department of Cardiology, Geneva University Hospital, 1205 Geneva, Switzerland