1. Mr. Aston and Dr. Rodriguez are with the Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California. Dr. Rodriguez is also with the Veterans Affairs Palo Alto Health Care System, Palo Alto, California. Send correspondence to Dr. Rodriguez (e-mail: ). Jeffrey L. Geller, M.D., M.P.H., and Frederick J. Frese, Ph.D., are editors of this column.