1. Faculty of Medicine, Nursing and Health Sciences, Monash University, Victoria 3800, Australia
2. Department of Obstetrics and Gynaecology, Monash University, 246 Clayton Road, Clayton, Victoria 3168, Australia
3. Monash Ultrasound for Women, The Epworth Centre, Suite 2.5, Level 2, 32 Erin Street, Richmond, Victoria 3121, Australia
4. Discipline of Obstetrics, Gynaecology and Neonatology, University of Sydney, New South Wales 2006, Australia
5. Sydney Ultrasound for Women, Suite 4.01, 45-47 York Street, Sydney, New South Wales 2000, Australia