Understanding the Rural–Urban Differences in Nonmedical Prescription Opioid Use and Abuse in the United States

Authors and Disclosures

Katherine M. Keyes, PhD, Magdalena Cerdá, DrPH, Joanne E. Brady, SM, Jennifer R. Havens, PhD, and Sandro Galea, MD, DrPH

Katherine M. Keyes, Magdalena Cerdá, and Sandro Galea are with the Department of Epidemiology, Columbia University, New York, NY. Joanne E. Brady is with the Department of Epidemiology and the Department of Anesthesiology, Columbia University. Jennifer R. Havens is with the Department of Behavioral Science, Center on Drug and Alcohol Research, University of Kentucky College of Medicine, Lexington.

Correspondence should be sent to
Katherine M. Keyes, Assistant Professor of Epidemiology, Columbia University Department of Epidemiology, Mailman School of Public Health, 722 West 168th Street, Suite 503, New York, NY 10032 (e-mail: kmk2104@columbia.edu). Reprints can be ordered at http://www.ajph.org by clicking the "Reprints" link.