1. King's College London School of Medicine (R.E.R.), London SE1 1UL, United Kingdom
2. Diabetes Research Group (M.Z., G.C.H.), King's College London School of Medicine, London SE5 9RS, United Kingdom
3. Department of Endocrinology (B.C.W., S.J.B.A.), London SE5 9RS, United Kingdom
4. Institute of Liver Studies (J.R., A.Q.), London SE5 9RS, United Kingdom
5. Department of Histopathology (S.D.-C.), London SE5 9RS, United Kingdom
6. Department of Clinical Biochemistry (C.W.l.R.), King's College Hospital, London SE5 9RS, United Kingdom