1. Department of Pediatrics, Division of Endocrinology, Erasmus University MC/Sophia Children’s Hospital (Y.K.v.P., S.M.P.F.d.M.K.-S., T.C.J.S., S.L.S.D.), 3015 GJ Rotterdam, The Netherlands
2. Department of Epidemiology and Biostatistics, Erasmus University MC (T.S.), 3015 GJ Rotterdam, The Netherlands
3. Wilhelmina Children’s Hospital (M.J.), 3584 EA Utrecht, The Netherlands
4. Sint Radboud University Hospital (B.J.O.), 6523 GA Nijmegen, The Netherlands
5. Free University Hospital (J.J.G.H.-N.), 1081 HV Amsterdam, The Netherlands
6. Academic Medical Center/Emma Children’s Hospital (T.V.), 1105 AZ Amsterdam, The Netherlands
7. Medical University Center (W.H.S.), 2333 ZA Leiden, The Netherlands
8. Beatrix Children’s Hospital (C.W.R.), 9713 GZ Groningen, The Netherlands
9. Juliana Children’s Hospital (H.M.R.), 2566 MJ The Hague, The Netherlands
10. Academic Hospital (W.J.G.), 6229 HX Maastricht, The Netherlands
11. Rijnland Hospital (J.J.G.), 2353 GA Leiderdorp, The Netherlands
12. Canisius-Wilhelmina Hospital (C.R-W.), 6532 SZ Nijmegen, The Netherlands