1. University Hospital Centre Sainte Justine, Department of Maternal Fetal Medicine University of Montreal Canada
2. Hospices Civils de Lyon, Hôpital Femme Mère Enfant, Department of Prenatal Diagnosis University Claude Bernard Lyon 1 France
3. Hospices Civils de Lyon, Hôpital Femme Mère Enfant, Department of Radiology University Claude Bernard Lyon 1 France
4. Erasme Hospital, Department of Radiology Brussels Belgium
5. Clinique du Val d'Ouest, Pediatric Plastic Surgery Department Ecully France