1. University of Texas, MD Anderson Cancer Center (M.I.H.), Houston, Texas 77030
2. Memorial Sloan-Kettering Cancer Center and Weill Cornell Medical College (I.G.G.), New York, New York 10065
3. Institut Gustave Roussy (S.L.), Villejuif, France
4. Yale School of Medicine (K.I.), New Haven, Connecticut 06510
5. Montefiore Medical Center-Bronx (R.G.), New York, New York 10467
6. Endocrinology Department, Medical Center for Postgraduate Education (W.M.), Warsaw, Poland
7. Lee Moffitt Cancer Center and Research Institute (B.Y.), Tampa, Florida 33607
8. Peninsula Regional Medical Center (P.Z.), Salisbury, Maryland 21801
9. Institut Régional du Cancer de Montpellier-Val d'Aurelle (D.T.), Montpellier, France
10. California Cancer Associates for Research and Excellence (A.B.), Encinitas, California 92024
11. Centre Hospitalier Universitaire de Limoges-Hôpital Dupuytren (A.J.), Limoges, France
12. Policlinico Universitario Campus Bio-Medico (G.T.), Rome, Italy
13. Amgen Inc (W.Y., A.B., R.K.J.), Thousand Oaks, California 91320