1 Department of Preventive Sports Medicine and Sports Cardiology, TUM School of Medicine and Health, University Hospital 'Klinikum rechts der Isar', Technical University of Munich, Georg-Brauchle-Ring 56, D-80992 Munich, Germany.
2 Cardiovascular Clinical Academic Group, St. George's University Hospitals NHS Foundation Trust, St. George's, University of London, Cranmer Terrace, London, SW17 0RE, UK.