1. Department of Cardiology, Ghent University Hospital, 9000 Ghent, Belgium
2. KU Leuven Department of Public Health and Primary Care, University of Leuven, 3000 Leuven, Belgium
3. Institute of Health and Care Sciences, University of Gothenburg, 405 30 Gothenburg, Sweden
4. Department of Pediatrics and Child Health, University of Cape Town, Cape Town 7700, South Africa
5. Center for Medical Genetics, Ghent University Hospital, 9000 Ghent, Belgium