1. Department of Neuropediatrics, University Hospital Essen University of Duisburg‐Essen Essen Germany
2. Institute of Human Genetics University Medical Center Göttingen Göttingen Germany
3. Cologne Center for Genomics University of Cologne Cologne Germany
4. Institute of Human Genetics University of Cologne Cologne Germany
5. Center for Molecular Medicine Cologne University of Cologne Cologne Germany
6. Institute of Human Genetics, University Hospital Essen University of Duisburg – Essen Essen Germany
7. Institute of Human Genetics, University Hospital Düsseldorf Heinrich‐Heine University Düsseldorf Germany