1. Maastricht University Medical Center, Department of Cardiology; CARIM, Maastricht The Netherlands
2. Maastricht University, Department of Knowledge Engineering; Maastricht The Netherlands
3. Kantonsspital St. Gallen, Department of Cardiology; St. Gallen Switzerland
4. University Hospital Bruderholz, Department of Cardiology; Bruderholz Switzerland
5. University Hospital Basel, Department of Cardiology; Basel Switzerland