1. Department of Obstetrics & Gynaecology, GROW School for Oncology and Developmental Biology, Maastricht University Medical Centre, Maastricht, The Netherlands
2. Department of Pediatric Medicine, Maastricht University Medical Centre, Maastricht, The Netherlands
3. Department of Clinical Chemistry and Laboratory Medicine, Maastricht University Medical Centre, Maastricht, The Netherlands
4. Department of Neonatology, University Hospital Antwerp, Antwerp, Belgium
5. Department of Epidemiology, Faculty of Health, Medicine and Life Sciences of Maastricht University, Maastricht, The Netherlands