Received June 23, 2003; revision received Oct. 28, 2003; accepted Nov. 5, 2003. From the Department of Psychiatry and Behavioral Sciences, Division of Geriatric Psychiatry and Neuropsychiatry, and the Division of Infectious Diseases, Department of Medicine, Johns Hopkins University School of Medicine; the Department of Biostatistics, Johns Hopkins Bloomberg School of Public Health; and the Baltimore City Health Department. Address reprint requests to Dr. Hutton, Meyer 4-119, Department of Psychiatry, Johns Hopkins School of Medicine, 550 N. Broadway, Suite 203, Baltimore, MD 21205; email@example.com (e-mail). Supported by NIMH grant MH-60066 (Dr. Erbelding). The authors thank Wayne P. Hunt, Ed.D., for conducting interviews and collecting data, Patricia B. Santora, Ph.D., for useful comments on earlier drafts, Charlene Wylie, B.A., for recruitment efforts, Lorraine Colleta, C.R.N.P., for clinical services, and the entire staff of the Eastern Health District STD Clinic (Baltimore City Health Department) for their support.