1. Department of Obstetrics and GynaecologyMonash University Melbourne Victoria Australia
2. Department of Obstetrics and GynecologyParacelsus Medical University Salzburg Austria
3. Fetal Medicine ServiceMonash Ultrasound for Women Melbourne Victoria Australia
4. Fetal Medicine ServiceAmbulatorium für Fetalmedizin Feldkirch Austria
5. Department of Medicine and Surgery, Obstetrics and Gynaecology UnitUniversity of Parma Parma Italy
6. School of Clinical SciencesMonash University Melbourne Victoria Australia