1. Department of Obstetrics & Gynaecology; Academic Medical Centre; Amsterdam The Netherlands
2. Department of Neonatology; Emma Children's Hospital; Academic Medical Centre; Amsterdam The Netherlands
3. Department of Obstetrics & Gynaecology; Academic Hospital Maastricht; Maastricht The Netherlands
4. Department of Obstetrics & Gynaecology; Martini Hospital Groningen; Groningen The Netherlands
5. School of Paediatrics and Reproductive Health; The Robinson Institute; University of Adelaide; Adelaide SA Australia