1. Department of Clinical Genetics; Maastricht University Medical Centre; Maastricht the Netherlands
2. Department of Human Genetics; Radboud University Medical Centre Nijmegen; Nijmegen the Netherlands
3. Centre for Molecular and Biomolecular Informatics (CMBI); Radboud University Medical Centre Nijmegen; Nijmegen the Netherlands
4. Department of Clinical Genetics; Vrije Universiteit; Amsterdam the Netherlands
5. Department of Clinical Genetics; Erasmus MC University Medical Centre; Rotterdam the Netherlands
6. University of Groningen; University Medical Centre Groningen; Department of Genetics; Groningen the Netherlands
7. Department of Clinical Genetics; Karolinska Universitetssjukhuset; Solna Sweden