1. Department of Obstetrics and Gynaecology, Monash University , Clayton, VIC, Australia
2. Centre for Reproductive Medicine, Amsterdam UMC, Location AMC , Amsterdam, The Netherlands
3. Department of Epidemiology & Data Science, Amsterdam UMC, Location VUmc , Amsterdam, The Netherlands
4. Women’s Health, School of Clinical Medicine, University of New South Wales & Royal Hospital for Women and Monash IVF , Sydney, NSW, Australia
5. Department of Obstetrics and Gynaecology, University of Auckland , Auckland, New Zealand
6. Department of Obstetrics and Gynaecology, Amsterdam UMC , Amsterdam, The Netherlands
7. Department of Reproductive Medicine and Gynaecology, University Medical Centre Utrecht , Utrecht, The Netherlands
8. Royal Women’s Hospital, Melbourne IVF , Melbourne, VIC, Australia
9. Aberdeen Centre for Women’s Health Research, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen , Aberdeen, UK
10. National Perinatal Epidemiology and Statistics Unit (NPESU), Centre for Big Data Research in Health, and School of Clinical Medicine, Faculty of Medicine, University of New South Wales, Sydney, Australia