1. Division of Endocrinology (E.A.N., R.B.T.), Department of Medicine, Brown University School of Medicine, Rhode Island Hospital, Providence, Rhode Island 02903;
2. Department of Psychiatry and Behavioral Sciences (F.A.), Northwestern University Medical School, Chicago, Illinois 60611;
3. Laboratory of Biochemical Neuroendocrinology (N.G.S.), Clinical Research Institute of Montréal, Montréal, Québec H2W1R7, Canada
4. Division of Maryland Psychiatric Research Center (J.I.K.), University of Maryland School of Medicine, Baltimore, Maryland 21228;