1. Department of Obstetrics and Gynaecology James Cook University College of Medicine Cairns QueenslandAustralia
2. Discipline of Obstetrics, Gynaecology and Neonatology University of SydneyCamperdown New South Wales Australia
3. Royal Prince Alfred Hospital CamperdownNew South Wales Australia
4. School of Health University of New England Armidale New South Wales Australia