1. Department of Endocrinology, University Hospital Gasthuisberg, KU Leuven, Leuven, Belgium
2. Medicine, KU Leuven, Leuven, Belgium
3. Department of Endocrinology, OLV ziekenhuis Aalst-Asse-Ninove, Aalst, Belgium
4. Department of Obstetrics and Gynecology, UZ Gasthuisberg, KU Leuven, Leuven, Belgium
5. Department of Obstetrics and Gynecology, OLV ziekenhuis Aalst-Asse-Ninove, Aalst, Belgium
6. Department of Endocrinology, Imelda ziekenhuis, Bonheiden, Belgium
7. Department of Obstetrics and Gynecology, Imelda ziekenhuis, Bonheiden, Belgium
8. Department of Endocrinology-Diabetology-Metabolism, Antwerp University Hospital, Edegem, Belgium
9. Department of Obstetrics and Gynecology, Antwerp University Hospital, Edegem, Belgium
10. Department of Endocrinology, Kliniek St-Jan Brussel, Brussel, Belgium
11. Department of Obstetrics and Gynecology, Kliniek St-Jan Brussel, Brussel, Belgium
12. Department of Endocrinology, AZ St Jan Brugge, Brugge, Belgium
13. Department of Obstetrics and Gynecology, AZ St Jan Brugge, Brugge, Belgium
14. Center of Biostatics and Statistical bioinformatics, KU Leuven, 3000 Leuven, Belgium