1. Division of Obstetrics and Gynaecology, University of Western Australia, Perth, Western Australia, Australia
2. Department of Obstetrics and Gynaecology, King Edward Memorial Hospital, Perth, Western Australia, Australia
3. Women and Infants Research Foundation, Carson House, King Edward Memorial Hospital, Perth, Western Australia, Australia
4. School of Biomedical Sciences, Universiy of Western Australia, Crawley, Western Australia, Australia
5. Fertility Specialists of Western Australia, Bethesda Hospital, Claremont, Western Australia, Australia