1. Departments of Psychiatry (E.L.C., A.S.), B-1200 Bruxelles, Belgium
2. Positron Tomography Laboratory (A.G.D.V., A.B., D.L., J.M.), Université Catholique de Louvain, B-1200 Bruxelles, Belgium
3. Neurology (A.I.), B-1200 Bruxelles, Belgium
4. Radiology (G.C.), B-1200 Bruxelles, Belgium
5. Endocrinology (C.D.), B-1200 Bruxelles, Belgium