1. Department of Obstetrics and Gynaecology, Division of Obstetrics and Prenatal Medicine; Erasmus MC University Medical Centre Rotterdam; Rotterdam The Netherlands
2. Department of Obstetrics and Gynecology; Princess Grace Hospital; Monaco Monaco
3. Department of Bioinformatics; Erasmus MC University Medical Centre Rotterdam; Rotterdam The Netherlands
4. Department of Biostatistics; Erasmus MC University Medical Centre Rotterdam; Rotterdam The Netherlands