1. Department of Cardiology; University of Groningen, University Medical Center Groningen; Groningen The Netherlands
2. Department of Genetics; University of Groningen, University Medical Center Groningen; Groningen The Netherlands
3. Department of Cardiology; Antonius Hospital Sneek; Sneek The Netherlands
4. Department of Clinical Genetics Rotterdam; Erasmus University Rotterdam, Erasmus University Medical Center; Rotterdam The Netherlands
5. Department of Pathology; University of Groningen, University Medical Center Groningen; Groningen The Netherlands