1 Division of Cardiology, Istituto Cardiocentro Ticino, Ente Ospedaliero Cantonale, Via Tesserete 48, CH-6900 Lugano, Switzerland.
2 Deutsches Herzzentrum der Charité (DHZC), Department of Cardiology, Angiology and Intensive Care Medicine, Charitéplatz 1, D-10117 Berlin, Germany.
3 Department of Cardiology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, D-10117 Berlin, Germany.
4 Department of Cardiology, German Centre for Cardiovascular Research (DZHK), Partner Site, Berlin.
5 Department of Cardiology, Cardiology Clinical Academic Group, Molecular & Clinical Sciences Institute, St. George's University of London, Cranmer Terrace, London SW17 0RE, UK.
6 Department of Cardiology, Hammersmith Hospital, National Heart & Lung Institute, Imperial College, Du Cane Road, London W12 0HS, UK.