Ms. Lewis is affiliated with the Vanderbilt University School of Medicine in Nashville. Dr. Marcus is with the University of Pennsylvania School of Social Work in Philadelphia. Dr. Olfson is with the College of Physicians and Surgeons at Columbia University in New York. Dr. Druss is with the Emory University School of Public Health in Atlanta. Dr. Pincus, who is coeditor of this column with Terri L. Tanielian, M.A., is with the department of psychiatry, University of Pittsburgh School of Medicine, 3811 O'Hara Street, Suite 230, Pittsburgh, Pennsylvania 15213 (e-mail, email@example.com) and the RAND-University of Pittsburgh Health Institute.