1. Department of Medicine, Clinical Sciences Centre (R.J.M.R., X.Y.S., S.V.L.) Endocrinologie Moleculaire Faculte de Medecine Necker 75730 Paris, France
2. St. Bartholomew’s Hospital London EC1A 7BE, UK INSERM unite 344 (N.E., M.-C. P.-V., J.F.) Endocrinologie Moleculaire Faculte de Medecine Necker 75730 Paris, France
3. Sheffield University, Sheffield S5 7AU Department of Endocrinology (S.L.C.) Endocrinologie Moleculaire Faculte de Medecine Necker 75730 Paris, France
4. Institute of Cancer Studies (P.R.M.D.) Endocrinologie Moleculaire Faculte de Medecine Necker 75730 Paris, France