1. Department of Obstetrics and Gynecology University Hospitals Leuven Leuven Belgium
2. Department of Development and Regeneration KU Leuven Leuven Belgium
3. Department of Obstetrics and Gynecology, Skåne University Hospital Malmö and Department of Clinical Sciences Malmö Lund University Malmö Sweden
4. Department of Epidemiology CAPHRI Care and Public Health Research Institute, Maastricht University Maastricht The Netherlands
5. Department of Obstetrics, Gynecology and Reproduction Hospital Universitario Dexeus Barcelona Spain
6. Clinic of Obstetrics and Gynecology, Department of Medicine and Surgery San Gerardo Hospital, University of Milan‐Bicocca Monza Italy
7. Dipartimento Scienze della Salute della Donna, del Bambino e di Sanità Pubblica Fondazione Policlinico Universitatio A. Gemelli, IRCCS Rome Italy
8. Institute for Maternal and Child Health IRCCS Burlo Garofolo Trieste Italy
9. Department of Obstetrics and Gynecology University of Cagliari, Policlinico Universitario Duilio Casula Monserrato, Cagliari Italy
10. Department of Clinical Science and Education, Karolinska Institutet, and Department of Obstetrics and Gynecology Södersjukhuset, Stockholm Sweden
11. Department of Obstetrics and Gynaecology Queen Charlotte's and Chelsea Hospital, Imperial College London London UK
12. Department of Obstetrics and Gynecology Clinical Sciences Institute Luigi Sacco Milan Italy