1. Department of Obstetrics and Gynecology, Erasmus Medical Center Rotterdam, Sophia-Dijkzigt, the Netherlands
2. Department of Pediatric Surgery, Erasmus Medical Center Rotterdam, Sophia-Dijkzigt, the Netherlands
3. Department of Radiology, Erasmus Medical Center Rotterdam, Sophia-Dijkzigt, the Netherlands
4. Department of Pathology, Erasmus Medical Center Rotterdam, Sophia-Dijkzigt, the Netherlands
5. Institute of Epidemiology and Biostatistics, Erasmus University Medical School Rotterdam, the Netherlands