Corresponding Author

Department of Obstetric Medicine, Royal Hospital for Women, Sydney, New South Wales, Australia

School of Women's and Children's Health, The University of New South Wales, Sydney, New South Wales, Australia

Correspondence: Associate Professor Sandra A Lowe, School of Women's and Children's Health, The University of New South Wales, Barker Street, Randwick, NSW 2031, Australia. Email: s.lowe@unsw.edu.au