Cleton-Jansen, A.M.; Moerland, H.W.; Vossen, R.H.A.M.; Callen, D.F.; Breuning, M.H.; Devilee, P.; Cleton-Jansen A.M.; Department of Pathology; Moerland H.W.; Department of Pathology; Vossen R.H.A.M.; Human Genetics, University of Leiden; Callen D.F.; Department of Cytogenetics and Molecular Genetics, Adelaide Children's Hospital; Breuning M.H.; Human Genetics, University of Leiden; Devilee P.; Department of Pathology; Human Genetics, University of Leiden