1. Department of Pediatrics; Division of Endocrinology; Erasmus Medical Center - Sophia Children's Hospital; Rotterdam The Netherlands
2. Department of Pediatrics; Rijnstate Hospital; Arnhem The Netherlands
3. Department of Pediatrics; Division of Endocrinology; University Medical Center Groningen; Groningen The Netherlands
4. Department of Pediatrics; Division of Endocrinology; VU University Medical Center; Amsterdam The Netherlands
5. Department of Pediatrics; Division of Endocrinology; Leiden University Medical Center; Leiden The Netherlands
6. Department of Pediatrics; Haga Hospitals - Juliana Children's Hospital; Den Haag The Netherlands
7. Department of Pediatrics; Canisius Hospital; Nijmegen The Netherlands
8. Department of Pediatrics; Division of Endocrinology; University Medical Center Radboud; Nijmegen The Netherlands
9. Department of Pediatrics; Division of Endocrinology; University Medical Center Utrecht; Utrecht The Netherlands
10. Department of Pediatrics; Catharina Hospital; Eindhoven The Netherlands
11. Department of Biostatistics; Erasmus Medical Center; Rotterdam The Netherlands
12. Dutch Growth Research Foundation; Rotterdam The Netherlands