1. Department of Obstetrics and Gynecology; University Medical Center Utrecht; Utrecht The Netherlands
2. Department of Obstetrics and Gynecology, Haaglanden Medical Center, The Hague; The Netherlands
3. Julius Center for Health Sciences and Primary Care; University Medical Center Utrecht; Utrecht The Netherlands
4. Department of Neonatology, Academic Medical Center; Amsterdam The Netherlands
5. Department of Neonatology; University Medical Center Utrecht; Utrecht The Netherlands
6. The Robinson Research Institute, School of Pediatrics and Reproductive Health and The South Australian Health and Medical Research Institute; University of Adelaide; Adelaide Australia
7. Department of Obstetrics and Gynecology, Academic Medical Center; Amsterdam The Netherlands