1. Endocrine Oncology Branch (B.B., X.K., P.N., D.P., N.N., E.K.), National Institutes of Health, Bethesda, Maryland 20892;
2. Laboratory of Pathology (M.M.), National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892;
3. PET Department (C.M., P.H.), National Institutes of Health Clinical Center, Bethesda, Maryland 20814;
4. National Institute of Diabetes and Digestive and Kidney Diseases (C.C., P.G.), National Institutes of Health, Bethesda, Maryland 20892