1. Developmental Endocrinology Research Group (D.K., J.C.A., M.T.D.), Institute of Child Health, University College London, London WC1N 1EH, United Kingdom
2. Clinical and Molecular Genetics Unit, and Medical Research Council-Wellcome Trust Human Developmental Biology Resource (S.C.P.d.C., D.G.), Institute of Child Health, University College London, London WC1N 1EH, United Kingdom
3. National Genetics Reference Laboratory (Wessex) (S.H., J.A.C.), Salisbury District Hospital, Salisbury SP2 8BJ, United Kingdom
4. Departments of Cytogenetics (R.P.), Great Ormond Street Hospital for Children National Health Service Trust, London WC1N 3JH, United Kingdom
5. Department of Child Health (J.W.G.), Wales College of Medicine, Cardiff University, Cardiff, Wales CF10 3XQ, United Kingdom
6. Departments of Ophthalmology (D.T.), Great Ormond Street Hospital for Children National Health Service Trust, London WC1N 3JH, United Kingdom
7. Department of Biomedicine of Evolutive Age (L.C., M.F.F., R.F.), University of Bari, Bari 70121, Italy
8. Neural Development Unit (J.P.M.-B.), Institute of Child Health, University College London, London WC1N 1EH, United Kingdom
9. Divisions of Developmental Genetics (K.R., R.L.-B.), Medical Research Council National Institute for Medical Research, Mill Hill, London NW7 1AA, United Kingdom
10. Molecular Neuroendocrinology (I.C.A.F.R.), Medical Research Council National Institute for Medical Research, Mill Hill, London NW7 1AA, United Kingdom