1. Division of Cardiology; University Hospital; Basel Switzerland
2. Division of Cardiology; Kantonsspital St. Gallen; Switzerland
3. Division of Cardiology, Kantonsspital Bruderholz; Switzerland
4. Division of Cardiology, Kantonsspital Liestal
5. Division of Cardiology, Kantonsspital Luzern; Switzerland
6. Division of Cardiology, Kantonsspital Aarau; Switzerland
7. Division of Cardiology, Kantonsspital Wolhusen; Switzerland
8. Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Centre (MUMC+); Maastricht The Netherlands