Bibian van der Voorn

215 ACKNOWLEDGEMENTS ACKNOWLEDGEMENTS Department of Pediatrics, VUMC, Amsterdam, The Netherlands Pediatric Endocrinology Dr. M. J.J. Finken, Dr. J. Rotteveel, J.J. Hollanders, MSc, N.S. Peppelman, BSc, A.A. Toorop, BSc, L.R. Dijkstra, BSc Neonatology Prof. Dr. J.B. van Goudoever, M. de Waard, MSc, S. Kouwenhoven, Prof. Dr. H.N. Lafeber, C.A. Ruys, MSc Department of Clinical Chemistry, VUMC, Amsterdam, The Netherlands Endocrinology laboratory Dr. A.C. Heijboer, F. Martens, C.W. Broersen-Man, M. Frans Department of Biological Psychology, VU, Nederlands Tweelingen Register, Amsterdam Prof. Dr. D.I. Boomsma Medical Library, VU Amsterdam, The Netherlands J.C.F. Ket Psychiatry Obstetric Pediatric Expert Center, OLVG Hospital, Amsterdam, The Netherlands OLVG-west Prof. Dr. A. Honig, Dr. K.M. Dolman, Dr. N. Kieviet OLVG-oost Dr. M.G van Pampus, M. Brouwer-Alberts Erasmus MC, University Medical Center Rotterdam, Netherlands Division of Endocrinology , Prof. Dr. E.F.C. van Rossum; Division of Clinical Chemistry , Prof. Dr. Y.B. de Rijke; Division of Pediatrics , Dr. E.L.T. van den Akker Leiden University Medical Center, The Netherlands Department of Pediatrics Prof. Dr. J.M. Wit, TNO, Child Health, Leiden, The Netherlands Dr. S.M. van der Pal Division of Pediatric Endocrinology and Diabetology, Steroid Research & Mass Spectrometry Unit, Giessen, Germany Prof. Dr. S.A. Wudy, Dr. M.F. Hartmann Centre for Cardiovascular Science, Queen’s Medical Research Institute, Edinburgh, UK. Prof. Dr. B.R. Walker, Dr. R. Andrew