1. Faculty of Medicine and Health, School of Public Health, The University of Sydney , Sydney, NSW, Australia
2. Faculty of Medicine and Health, School of Health Sciences, The University of Sydney , Sydney, NSW, Australia
3. Centre of Longitudinal and Life Course Research, School of Public Health, The University of Queensland , Brisbane, QLD, Australia
4. School of Public Health and Preventive Medicine, Monash University , Melbourne, VIC, Australia
5. Department of Obstetrics and Gynaecology, Royal Women’s Hospital, The University of Melbourne , Melbourne, VIC, Australia
6. City Fertility Centre Pty Ltd , Sydney, NSW, Australia
7. Department of Obstetrics and Gynaecology, Monash University , Melbourne, VIC, Australia
8. Aberdeen Centre for Women’s Health Research, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen , Aberdeen, UK