Received March 31, 1997; revisions received Nov. 26, 1997, and March 20, 1998; accepted April 15, 1998. From the Department of Psychiatry, the Department of Pediatrics, and the Discipline of Medical Informatics, Hospital das Clinicas, University of São Paulo Medical School, São Paulo, Brazil; and the Clinical Neuroendocrinology Branch, NIMH, Bethesda, Md. Address reprint requests to Dr. Asbahr, Departamento de Psiquiatria da FMUSP, Rua Dr. Ovdio Pires de Campos, s/n, Caixa Postal: 8091; CEP: 05403-010, São Paulo, Brazil; firstname.lastname@example.org (e-mail). Supported by the Fundação de Amparo Pesquisa do Estado de São Paulo (grant 96/09046-6 to Dr. Asbahr and grant 95/0194-0 to Dr. Gentil). The authors thank Drs. Ana C. Tanaka, Ana L. Pinto, Bernardete Liphaus, Claudia Scheimberg, Clovis Silva, Kette Valente, Lucia Campos, Lucila Arajo, and Maria T. Chamma for patient referrals; Drs. Eloisa Bonfa and Ligia Ito for comments; and Dr. Susan Swedo for manuscript review.