1. University of Leeds; Leeds UK
2. The General Infirmary of Leeds; Department of Obstetrics and Gynaecology; United Leeds Teaching Hospitals NHS Trust Belmont Grove Leeds UK LS2 9NS
3. Royal Jubilee Maternity Service; Regional Fertility Centre; Grosvenor Road Belfast UK BT12 6BA
4. University of Adelaide; Obstetrics & Gynaecology, Robinson Institute; Adelaide South Australia 5005 Adelaide South Australia Australia
5. University of Adelaide; Reproductive Medicine Unit, Department of Obstetrics and Gynaecology; Level 6, Medical School North Frome Road Adelaide South Australia Australia 5005
6. Fertility SA; Adelaide Australia
7. The Leeds Centre for Reproductive Medicine, Seacroft Hospital; Reproductive Medicine and Surgery; York Road Leeds UK LS14 6UH