1. Division of Obstetrics and Fetal Medicine Department of Obstetrics and Gynecology Erasmus MC‐Sophia Children's Hospital University Medical Center Rotterdam Rotterdam The Netherlands
2. Department of Biostatistics Erasmus University Medical Center Rotterdam Rotterdam The Netherlands
3. Department of Epidemiology Erasmus University Medical Center Rotterdam Rotterdam The Netherlands
4. Department of Pediatric Surgery and Intensive Care Erasmus MC‐Sophia Children's Hospital University Medical Center Rotterdam Rotterdam The Netherlands