1. Department of Paediatric Endocrinology (A.A.V.S., M.A.d.V.), Universitair Medisch Centrum, Lundlaan 6, 3508 AB Utrecht, The Netherlands
2. Division of Endocrinology, Metabolism, and Molecular Medicine (G.O., T.J.P., R.M.H., J.W., J.L.J.), Northwestern University, The Feinberg School of Medicine, Chicago, Illinois 60611-3008
3. Department of Medical Genetics (J.C.G., R.J.S.), Universitair Medisch Centrum, Lundlaan 6, 3508 AB Utrecht, The Netherlands