1. Department of Medical Genetics (M.G., E.H., A.K., L.A.A.), 00014 University of Helsinki, Helsinki, Finland
2. Medical Department III (R.P.), Leipzig University, 04103 Leipzig, Germany
3. Clinical Genetics (A.V.K.K.), Great Ormond Street National Health Service Trust, London WC1N 3JH, United Kingdom
4. Departments of Human Genetics, Oncology, and Medicine (M.T.), McGill University, Sir Mortimer B. Davis Jewish General Hospital, H3T 1E2 Montreal, Quebec, Canada
5. Departments of Clinical Genetics (O.V.), Oulu University Hospital, 90029 Oulu, Finland
6. Internal Medicine (P.S.), Oulu University Hospital, 90029 Oulu, Finland
7. Department of Endocrinology (T.S.), Helsinki University Central Hospital, 00029 Helsinki, Finland
8. Department of Internal Medicine (E.D.M.), General Hospital, 31044 Montebelluna, Italy
9. Department of Medicine and Pharmacology (S.C.), Section of Endocrinology, University of Messina, 98125 Messina, Italy
10. Division of Endocrinology-Metabolism and Diabetes (S.G.), Cerrahpaçsa Medical Faculty, University of Istanbul, 34303 Istanbul, Turkey
11. Wessex Clinical Genetics Service (A.L.), Princess Anne Hospital, SO16 5YA Southampton, United Kingdom
12. Department of Clinical Genetics (L.I.), New Guy’s House, Guy’s Hospital, London SE1 9RT, United Kingdom
13. Department of Medicine (S.A.), King’s College Hospital, Denmark Hill, London SE5 9RS, United Kingdom
14. Department of Endocrinology and Diabetes (G.B.), Thomas Addison Unit, London SW17 0QT, United Kingdom
15. Department of Clinical Genetics (S.H.), St. Georges, University of London, London SW17 ORE, United Kingdom
16. Division of Endocrinology (C.A.K.), University of Mississippi Medical Center, Jackson, Mississippi 39216