1. Department of Obstetrics and Gynaecology; Máxima Medical Centre; Eindhoven-Veldhoven the Netherlands
2. Department of Obstetrics and Gynaecology; Maastricht University Medical Centre; Maastricht the Netherlands
3. Julius Center for Health Sciences and Primary Care; University Medical Center Utrecht; Utrecht the Netherlands
4. Stanford Prevention Research Center; Stanford University; Stanford California USA
5. The Robinson Institute; School of Paediatrics and Reproductive Health University of Adelaide and the South Australian Health and Medical Research Institute; Adelaide South Australia Australia
6. Department of Electrotechnical Engineering; Eindhoven University of Technology; Eindhoven the Netherlands