1. Department of Endocrinology and Metabolism (I.L.), University of Pisa 56124 Pisa, Italy
2. Division of Magnetic Resonance Research (J.Z., S.M.), The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205
3. Department of Neurosurgery (A.G.), Georg August University, 37073 Göttingen, Germany
4. Russell H. Morgan Department of Radiology and Radiological Science and Department of Pathology (M.L.-S., S.-C.T., P.C.), The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205
5. The Johns Hopkins University School of Medicine, and Feinstone Department of Molecular Microbiology and Immunology (P.C.), The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205