1. Department of Obstetrics and Gynaecology; Mount Sinai Hospital and University of Toronto; Toronto Canada
2. Mother Infant Research Institute at Tufts Medical Center; Boston MA USA
3. Department of Pathology and Cell Biology; Columbia University; New York NY USA
4. Department of Obstetrics and Gynecology; University Hospitals Leuven; Leuven Belgium
5. North Thames NHS Genomic Medicine Centre; Great Ormond Street NHS Foundation Trust; London UK
6. Genetics and Genomic Medicine; UCL Great Ormond Street Institute of Child Health; London UK
7. Inova Alexandria Hospital; Alexandria VA USA