1. Regional Center for Endocrinology and Diabetes (F.W., S.H., A.B.A.), Royal Victoria Hospital, Belfast BT12 6BA, Northern Ireland, United Kingdom;
2. Department of Medical Genetics (L.B., P.J.M.), Belfast Health and Social Care Trust, Belfast BT9 7AB, Northern Ireland, United Kingdom;
3. Department of Endocrinology (H.S.C., H.L.S., S.A.A., M.K.), Barts and London School of Medicine, Queen Mary University of London, London EC1A 6BQ, United Kingdom;
4. North East Thames Regional Genetics Service (A.V.K.), Great Ormond Street Hospital, London WC1N 3JH, United Kingdom;
5. Department of Endocrinology (S.M.O.), St James University Hospital, Leeds LS9 7TF, United Kingdom;
6. Department of Radiology (J.E.), St Bartholomew Hospital, London EC1A 7BE, United Kingdom;
7. Department of Endocrinology (N.A.), Royal Belfast Hospital for Sick Children, Belfast, BT12 6BA, United Kingdom