1. Department of Obstetrics and Gynecology; University of Parma; Parma Italy
2. Department of Obstetrics and Gynecology; Aristotle University of Thessaloniki; Thessaloniki Greece
3. Department of Obstetrics and Gynecology; Charles University in Prague, First Faculty of Medicine and General Teaching Hospital; Prague Czech Republic
4. Monash Ultrasound for Women and Perinatal Services; Monash Medical Centre, Melbourne; Victoria Australia
5. Division of Child Health, Obstetrics and Gynaecology; School of Medicine, University of Nottingham; Nottingham UK - Nurture Fertility, The Fertility Partnership
6. Department of Women's and Children's Health; University of Liverpool; Liverpool UK
7. Victorian Clinical Genetics Services, Mercy Hospital for Women; Murdoch Children's Research Institute; Melbourne Australia