1. 1Department of Internal Medicine, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
2. 2Department of Internal Medicine, Maasstad Hospital, Rotterdam, The Netherlands
3. 3Department of Anesthesiology, Unit of Obstetric Anesthesiology
4. 4Division of Obstetrics and Prenatal Medicine, Department of Obstetrics and Gynaecology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
5. 5Foundation Prenatal Screening Southwest Region of the Netherlands, Rotterdam, The Netherlands
6. 6Department of Surgery, Erasmus MC, University Medical Center, Rotterdam, The Netherlands