1. ; Department of Paediatrics; University of Erlangen-Nuremberg; Erlangen
2. ; Klinik mit Poliklinik für Kinder und Jugendliche; Universität Erlangen-Nürnberg; Loschgestr. 15 Erlangen D-91054 Germany
3. ; Department of Paediatrics; University of Heidelberg; Heidelberg
4. ; Department of Human Genetics; University of Erlangen-Nuremberg; Erlangen Germany
5. ; University Children's Hospital; Utrecht The Netherlands
6. ; Department of Paediatrics; University of Leipzig; Leipzig Germany
7. ; Department of Clinical Genetics; Rigshospitalet; Copenhagen Denmark
8. ; Children's Hospital; Reutlingen
9. ; Children's Hospital; Bayreuth Germany