1. Department of Psychiatry, Columbia University Vagelos College of Physicians and Surgeons, and New York State Psychiatric Institute, New York City (Olfson, Wall); Center for Financing, Access and Cost Trends, Agency for Healthcare Research and Quality, Rockville, Maryland (Zuvekas, McClellan); Department of Psychiatry and Department of Population Health Sciences and Policy, Icahn School of Medicine at Mount Sinai, New York City (Hankerson); National Institute on Drug Abuse, Bethesda (Blanco).