Dr. Buck is affiliated with the Substance Abuse and Mental Health Services Administration, 1 Choke Cherry Road, 6-1061, Rockville, Maryland 20857 (e-mail, jeff.buck@samhsa.hhs.gov). Dr. Mark is with Medstat in Washington, D.C. Harold Alan Pincus, M.D., Terri L. Tanielian, M.A., and Amy Kilbourne, Ph.D., M.P.H., are editors of this column.