1. Endocrine Clinic, Obstetrics and Reproductive Medicine Unit, Centre Hospitalier Universitaire (CHU) Saint-Pierre, Brussels, Belgium.
2. Université Libre de Bruxelles (ULB), Brussels, Belgium.
3. Departement of Gynecology, Obstetrics and Reproductive Medicine Unit, Centre Hospitalier Universitaire (CHU) Saint-Pierre, Brussels, Belgium.