About This Journal FREE

Editor: Rita F. Redberg, MD, MSc UCSF School of Medicine 3333 California St, Ste 430 San Francisco, CA 94143-1211 Phone: (415) 476-3545 Fax: (415) 476-8990 E-mail: archinternmed@jama-archives.org

Deputy Editors: David C. Goff Jr, MD, PhD, Winston-Salem, North Carolina Mitchell H. Katz, MD, San Francisco, California Patrick G. O'Malley, MD, MPH, Washington, DC

Statistical Editors: David V. Glidden, PhD, San Francisco, California John M. Neuhaus, PhD, San Francisco, California

Assistant Editor: Kathleen M. McKibbin, MD, Winnetka, Illinois

Editorial Assistant: Kyleigh Nevis, San Francisco, California

CME: Jeffrey Tabas, MD, San Francisco, California Web: Robert A. Phillips, MD, PhD, Worcester, Massachusetts

Charles L. Bennett, MD, PhD, Chicago, Illinois JudyAnn Bigby, MD, Boston, Massachusetts Martin J. Blaser, MD, New York, New York Robert D. Brook, MD, Ann Arbor, Michigan Mary Cushman, MD, MSc, Burlington, Vermont Rodney H. Falk, MD, Boston, Massachusetts Ann R. Falsey, MD, Rochester, New York Mark N. Feinglos, MD, CM, Durham, North Carolina Alan S. Go, MD, Oakland, California Kurt Kroenke, MD, Indianapolis, Indiana Karen Margolis, MD, MPH, Minneapolis, Minnesota Mary M. McDermott, MD, Chicago, Illinois Carlos F. Mendes de Leon, PhD, Chicago, Illinois C. Noel Bairey Merz, MD, Los Angeles, California Samia Mora, MD, MHS, Boston, Massachusetts Michael Pignone, MD, MPH, Chapel Hill, North Carolina Bruce M. Psaty, MD, PhD, MPH, Seattle, Washington Kathryn M. Rexrode, MD, MPH, Boston, Massachusetts Kenneth G. Saag, MD, MSc, Birmingham, Alabama Mary E. Tinetti, MD, New Haven, Connecticut Jack Zwanziger, PhD, MBA, Chicago, Illinois

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Department Director: Paula Glitman Manuscript Editing Manager: Lauren B. Fischer Senior Manuscript Editors: Dee E. Egger, John McFadden, Donald S. Smith Manuscript Editor: Karen L. Boyd Freelance Manuscript Editing Manager: Diane L. Cannon Freelance Manuscript Editing Coordinators: Vickey Golden, Julia M. Kessler, Connie L. Manno Freelance Copy Editors and Copyreaders: Catherine A. Alden, Barbara E. Burnette, Jan Clavey, Lisa M. Cluver, Mary Coerver-Connolly, Allison Esposito, GeorgeMary Gardner, Robin Husayko, Laura King, Nicole C. Netter, Rachel Young Editorial Systems Managers: Paul Frank, Monica Mungle Systems Programmer/Internet Specialist: J.D. Neff Editorial Assistant: Wanda Hill

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Director: Margaret Winker, MD Electronic Media Department Director: Michelle Kurzynski Associate Web Editors: Christopher Hastings, Peter Kim Web Administrative Assistant: Reuben Rios

Senior VP & Publisher: Robert A. Musacchio, PhD

Division Director: Jeffery J. Bonistalli Manager: Kathy Russell Staff: Mirna Monal, Jennifer Seminerio Sales Representatives: Peter G. Messina, Patricia Quilty Assistant Publisher, Classified Advertising/Circulation Promotion: Geoffrey Flick Manager: Thalia Moss Staff: Rachelle Brooks, Tem Harrier, Michelle Sharpe Director, Marketing Support Services: Mark Thornbury Staff: Nancy Bell, Dennis Sammartino Director, Reprints: Mark Kuhns Staff: Susan Lovenberg

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Michael D. Maves, MD, MBA, Executive Vice President, Chief Executive Officer Bernard L. Hengesbaugh, Chief Operating Officer Robert A. Musacchio, PhD, Senior Vice President, Publishing & Business Services

All articles published, including editorials, letters, and book reviews, represent the opinions of the authors and do not reflect the policy of the American Medical Association, the Editorial Board, or the institution with which the author is affiliated, unless this is clearly specified.

Copyright 2009 by the American Medical Association. All rights reserved. Reproduction without permission is prohibited.