microscopic anatomy, and neuroanatomy at USUHS, where she was awarded an outstanding teaching award in 1985. Her postdoctoral training was at the National Institute of Neurological Disorders and Stroke. Currently, she is a health policy tutor at Stanford in Washington. Her published laboratory research has included studies of blood-brain barrier function, glucose utilization in experimental head injury, and the neuroanatomy of pain sensation.

MICHAEL A. STOTO, Ph.D. is the director of the Division of Health Promotion and Disease Prevention of the Institute of Medicine. He received an A.B. in statistics from Princeton University and a Ph.D. in statistics and demography from Harvard University, and was formerly an associate professor of public policy at the Harvard University John F. Kennedy School of Government. A member of the professional staff since 1987, Dr. Stoto directed the IOM's effort in support of the Public Health Service's Healthy People 2000 project and has worked on IOM projects addressing a number of issues in public health, health statistics, health promotion and disease prevention, vaccine safety and policy, and AIDS. Dr. Stoto is co-author of Data for Decisions: Information Strategies for Policy Makers and numerous articles in statistics, demography, health policy, and other fields. He is a member of the American Public Health Association, the American Statistical Association, the International Union for the Scientific Study of Population, the Population Association of America, and other organizations.

CHRISTINA WYPIJEWSKA, M.P.H. is a program officer at the Institute of Medicine for the Committee on Substance Abuse and Mental Health Issues in AIDS Research. Prior to joining the IOM, she worked in the Public Health Service for the Office of the Assistant Secretary for Health in the areas of disease prevention and health promotion. As prevention policy advisor, Ms. Wypijewska coordinated PHS implementation strategies for Healthy People 2000 and contributed to worksite health promotion initiatives, including the 1992 National Survey of Worksite Health Promotion Activities. When she first joined the PHS, Ms. Wypijewska worked as the special assistant for the deputy assistant secretary for health, providing research, writing, and editorial assistance for a variety of articles and publications. Ms. Wypijewska received her M.P.H. degree from Yale University and her undergraduate degree in biology from Vassar College. In the D.C. community, she has volunteered as a counselor with the D.C. Rape Crisis Center and the Prenatal Program of the Washington Free Clinic, where she currently serves on the Board of Directors.