1. Department of Reproductive Medicine (F.Y., F.J.M.B.), The Netherlands
2. Department of Cardiology (A.H.E.M.M.), University Medical Center St. Radboud, 6500 HB Nijmegen, The Netherlands
3. Department of Obstetrics (A.F., B.B.v.R.), The Netherlands
4. Julius Center for Health Sciences and Primary Care (M.J.C.E., Y.T.v.d.S.), University Medical Center Utrecht, 3508 GA Utrecht, The Netherlands
5. Department of Cardiology (J.T.D.), The Netherlands
6. Academic Unit of Human Development and Health (B.B.v.R.), University of Southampton, Southampton SO16 6YD, United Kingdom
7. Department of Gynaecology and Obstetrics (J.v.E.), Isala Klinieken Zwolle, 8025 AB Zwolle, The Netherlands