1. Department of Obstetrics and Gynecology; Sint-Jans Hospital; Genk Belgium
2. Center for Human Genetics; University of Leuven; Leuven Belgium
3. GROW School of Oncology and Developmental Biology; Maastricht University Medical Centre+; Maastricht The Netherlands
4. Department of Clinical Genetics; Maastricht University Medical Center+; Maastricht The Netherlands
5. Department of Pathology; Maastricht University Medical Center+; Maastricht The Netherlands