1. Department of Human Genetics; Radboud University Medical Centre; Nijmegen The Netherlands
2. Obstetrics and Gynecology; Georgetown University Hospital; Washington DC USA
3. Obstetrics and Gynaecology; University Hospitals Leuven; Leuven Belgium
4. Academic Department Development and Regeneration; Biomedical Sciences; KU Leuven Leuven Belgium
5. UCL Institute of Child Health; Great Ormond Street Hospital for Children and UCLH NHS Foundation Trusts; London England UK
6. Mother Infant Research Institute; Tufts Medical Center; Boston MA USA
7. Floating Hospital for Children; Boston MA USA