1. Department of Cardiology; Rigshospitalet, Copenhagen; Denmark
2. Department of Cardiology; Hillerød Hospital, Hillerød; Denmark
3. Department of Cardiology; Odense University Hospital; Odense Denmark
4. Departments of Cardiology and Endocrinology; Frederiksberg Hospital; Frederiksberg Denmark
5. Department of Cardiology; Skejby Hospital; Aarhus Denmark