1. South Coast Ultrasound for Women; 10/363 Crown Street Wollongong New South Wales 2500 Australia
2. Discipline of Obstetrics, Gynaecology and Neonatology; Central Clinical School; Faculty of Medicine; University of Sydney; Camperdown New South Wales 2006 Australia
3. School of Health, Medical and Applied Science; Central Queensland University; 400 Kent Street Sydney New South Wales 2000 Australia
4. Discipline of Obstetrics, Gynaecology and Neonatology; Nepean School; Faculty of Medicine; University of Sydney; Camperdown New South Wales 2006 Australia
5. RPA Women and Babies; Royal Prince Alfred Hospital; 50 Missenden Road Camperdown New South Wales 2050 Australia