1. Department of Pediatric Endocrinology (R.D.v.B., S.M.P.F.d.M.K.-S.), Erasmus MC Rotterdam, 3000 CB Rotterdam, The Netherlands
2. Department of Pediatric Hematology/Oncology (R.D.v.B., M.M.v.d.H.-E., F.G.H.-C., R.P.), Erasmus MC Rotterdam, 3000 CB Rotterdam, The Netherlands
3. Erasmus MC–Sophia Children’s Hospital Rotterdam, and Department of Gynecology and Obstetrics (J.S.E.L.), Erasmus MC Rotterdam, 3000 CB Rotterdam, The Netherlands
4. Division of Reproductive Medicine, and Department of Internal Medicine (F.H.d.J., A.P.N.T.), Erasmus MC Rotterdam, 3000 CB Rotterdam, The Netherlands
5. Department of Pediatric Oncology (C.v.d.B., H.v.d.B.), Emma Children’s Hospital-Academic Medical Center Amsterdam, 1100 DE Amsterdam, The Netherlands