1 Institute of Human Genetics, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University, Düsseldorf, Germany.
2 Institute of Human Genetics, University of Bonn, Medical Faculty and University Hospital Bonn, Bonn, Germany.
3 Department of Prosthodontics, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University, Düsseldorf, Germany.
4 Center of Rare Disorders, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University, Düsseldorf, Germany.
5 Interdisciplinary Centre for Palliative Medicine, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University, Düsseldorf, Germany.
6 Cologne Center for Genomics (CCG), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany.
7 Department of Dermatology, Venereology and Allergology, Göttingen University Medical Center, Göttingen, Germany.